CultureUpIndigenous Black memory, source trails, and public records

Start Here Dispatch Participate Support Search

Browse CultureUp

Patent holder profile

Otis F. Boykin and the precision-resistor patent record

Boykin's 1959 resistor patent anchors an electronics route that separates patent facts, assignee facts, and later medical-device claims.

Why this belongs on CultureUp

Boykin is a public-record memory story.

This belongs on CultureUp because the patent record connects invention to place, public institutions, work systems, laboratories, employers, federal or corporate assignment, and the limits of public records.

Sprint 5 priority 5 / not final rankStatus: source_reviewedSource grade: B+

Patent: 2891227: Wire Type Precision Resistor
Issue date: 1959-06-16
Place: Chicago, Illinois
Record strength: Patent-record facts are attached with at least one public context source. CultureUp still separates patent proof from biography, adoption, commercialization, and identity claims.
Identity evidence: Public context source attached where available; CultureUp does not use the patent row alone as race, ancestry, lineage, or Indigenous Black identity proof.
Sprint priority: 5 / not final rank
Cluster: Electronics, audio, and space systems
Assignee: Chicago Telephone Supply Corp. / corporate assignee
Needed before promotion: Promotion language should remain limited until source-led context, assignment, co-inventor, and commercialization review is complete.
Why this record matters: The record moves Patented Memory into precision electronics while warning readers not to collapse resistor patents into every later pacemaker claim.

What the public record supports

U.S. Patent No. 2891227, issued June 16, 1959.
Chicago Telephone Supply Corp. as assignee.
NIHF public context for Boykin's resistor work.

What remains open

Full patent-family context.
Which later resistor claims are supported by which patent.
Commercial and medical-device adoption source trail.

Article profile

Read the person, place, invention, and record separately.

CultureUp keeps each layer visible so a patent record does not get stretched into claims the source trail cannot support.

The patent record

2891227 was issued on 1959-06-16 for Wire Type Precision Resistor. The route also names Chicago Telephone Supply Corp. as corporate assignee, because inventor status and assignment are different public-record facts.

The person in the record

The attached public context sources support a reader-facing profile frame. Any deeper life history, family record, school record, employment file, or community memory needs its own source trail.

Place attached to the claim

Chicago, Illinois is the public place anchor used for this route. CultureUp does not infer local family continuity from the patent row alone.

The invention

The invention is summarized from the public patent title and source trail. Technical, market, institutional, and adoption claims stay limited to what the attached sources can support.

Business, labor, and use

Modern patent records often separate inventor, employer, assignee, licensee, and beneficiary. CultureUp keeps those categories apart instead of treating a patent as proof of ownership, wealth, adoption, or public impact.

What the record cannot prove

The patent record does not by itself prove full biography, race, ancestry, Indigenous Black identity, commercialization, institutional adoption, economic benefit, modern product lineage, or community memory.

Identity and correction note

CultureUp treats this as Black American patent memory only through public, reviewable sources. The page does not certify ancestry, descent, tribe, nationality, family history, or private identity.

Send stronger patent images, assignment records, employer records, licensing documents, public biographies, or source corrections through CultureUp's correction path.

Patent records do not prove final rank, private identity, solo credit when co-inventors appear, employment ownership, commercialization, adoption, or later public impact.

Indexable as a source-led Sprint 5 profile with visible source limits.

Employer, assignee, and inventor status are not interchangeable. CultureUp names assignees when the patent record does.

Do not use this page to make absolute first, ownership, adoption, or commercialization claims without a separate source trail.

Patent records

Grant trail

Grant rank and unique-holder rank are shown separately so repeat patentees do not distort the chronological sequence.

modern_systems_candidateSprint priority 5Not public rankutility patentmedium high

2891227: Wire Type Precision Resistor

Otis F. Boykin / 1959-06-16

Sprint 5 modern systems candidate. The patent row supports resistor technology and assignee facts, not every later pacemaker or commercialization claim.

Residence: Chicago, Illinois
Category: electronics / precision resistor
Source status: medium high
Chronology handling: modern_systems_candidate
Cluster: Electronics, audio, and space systems
Assignee: Chicago Telephone Supply Corp. / corporate assignee
Primary sources: 2 mapped

Source trail

Claims stay tied to source limits.

Electronics, audio, and space systems

Sources for precision electronics, microphones, imaging, optical transmission, detector systems, and science instruments.

patent text mirrorelectronics patent-record candidate

US2891227A - Wire Type Precision Resistor

Google Patents / 1959 patent record

Supports: Shows Otis F. Boykin as inventor, Chicago Telephone Supply Corp. as assignee, and a wire type precision resistor patent published June 16, 1959.
Limit: The patent record verifies invention data, assignee, and issue date. It does not by itself prove full identity, biography, pacemaker claims, commercialization, public memory, or economic benefit.
Last checked: 2026-06-09
Source URL: https://patents.google.com/patent/US2891227A/en

Public memory

Objects, museums, and public interpretation records that help readers see how an invention remains visible.

public inventor profilepublic inventor context

Otis Boykin's Enduring Impact on Technology

National Inventors Hall of Fame / NIHF public profile

Supports: Places Boykin's resistor work inside a public inventor profile and distinguishes later resistor claims from the first patent row.
Limit: Does not let CultureUp claim every pacemaker or commercialization detail from the 1959 patent alone.
Last checked: 2026-06-09
Source URL: https://www.invent.org/blog/inventors/otis-boykin-electrical-resistor-pacemaker