20th-Century Systems in Black Patent Memory

An indexable CultureUp cluster for heating, agricultural chemistry, mobile refrigeration, and the systems-era records that move patent memory beyond single-tool biographies.

Cluster thesis

20th-century systems

Twentieth-century patent memory has to read systems: homes, labs, vehicles, materials, supply chains, and institutional settings. Patent rows can anchor invention facts, but adoption and public impact require separate records.

Related patent holders

Alice H. Parker / 1325905 George Washington Carver / 1541478 Frederick McKinley Jones / 2303857

Patent records

Source-led record cards

These cards show patent-record facts and review status without promoting final holder rank.

systems_era_candidateSprint priority 1Not public rankutility patentmedium high

1325905: Heating Furnace

Alice H. Parker / 1919-12-23

Sprint 5 systems-era candidate. The patent and public context sources support a heating-system record; CultureUp does not convert the record into adoption, commercialization, or absolute-first language.

Residence: Morristown, New Jersey
Category: home heating / domestic systems
Source status: medium high
Chronology handling: systems_era_candidate
Cluster: 20th-century systems
Primary sources: 2 mapped

systems_era_candidateSprint priority 2Not public rankutility patenthigh

1541478: Paint and Stain and Producing the Same

George Washington Carver / 1925-06-09

Sprint 5 systems-era candidate. Patent and public-archive context support Carver's materials work; commercial, educational, and agricultural-extension claims require separate sources.

Residence: Tuskegee, Alabama
Category: agricultural chemistry / materials
Source status: high
Chronology handling: systems_era_candidate
Cluster: 20th-century systems
Primary sources: 3 mapped

systems_era_candidateSprint priority 3Not public rankutility patenthigh

2303857: Air Conditioner for Vehicles

Frederick McKinley Jones / 1942-12-01

Sprint 5 systems-era candidate. The record must preserve Joseph A. Numero as co-inventor and U.S. Thermo Control Co. as assignee.

Residence: Minneapolis, Minnesota
Category: mobile refrigeration / vehicle systems
Source status: high
Chronology handling: systems_era_candidate
Cluster: 20th-century systems
Co-inventors: Joseph A. Numero
Assignee: U.S. Thermo Control Co. / corporate assignee
Primary sources: 2 mapped

Proof limits

What this cluster can and cannot prove.

What these records can prove

Patent numbers, titles, issue dates, co-inventors, assignees, and recorded places where present.
A systems-era lane covering heating, materials, and mobile refrigeration records.
The need to distinguish invention, adoption, employer assignment, and public-memory impact.

What remains under review

Commercial adoption and market scale.
Employer or company ownership relationships.
Local place-memory and institutional records beyond the patent row.

Co-inventor and assignee notes

Frederick McKinley Jones's vehicle air-conditioning record must preserve Joseph A. Numero as co-inventor.
U.S. Thermo Control Co. appears as assignee in the Jones/Numero patent record.
CultureUp does not treat assignee status as inventor ownership or economic benefit without additional sources.

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20th-Century Systems in Black Patent Memory