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Patent holder profile

Thomas L. Jennings and the dry-scouring patent record

Jennings belongs at the start of this CultureUp patent trail because the public source record ties his 1821 dry-scouring patent to free Black citizenship, skilled trade, abolitionist work, and the damaged X-patent archive.

Why this belongs on CultureUp

Jennings is a public-record memory story.

The Jennings page is a CultureUp public-memory article because it links invention to legal recognition, Black citizenship, skilled work, church and abolitionist networks, and the limits of a lost federal record.

Unique holder rank 1 / grant rank 1Status: publish_readySource grade: A-

Patent: 3306X: Dry Scouring
Issue date: 1821-03-03
Place: New York, New York
Record strength: High public-memory strength with an X-patent caveat: institutional sources identify the patent and date, while the original specification remains unrecovered.
Identity evidence: Strong institutional biography trail for a free Black New Yorker; CultureUp still avoids absolute-first language beyond the reviewed source trail.
Why this record matters: Jennings is the current public starting point for this archive because the record joins patent access, skilled labor, Black citizenship, and the archive loss problem in one early case.

What the public record supports

U.S. Patent No. 3306X for dry scouring, issued March 3, 1821.
National Inventors Hall of Fame profile identifying Jennings as the first Black American granted a patent.
Smithsonian reporting that explains the unrecovered X-patent caveat and Jennings's abolitionist use of patent income.

What remains open

The original patent specification has not been recovered in the reviewed source trail.
A deeper local archive pass should attach contemporary newspaper notices and church records where public and reviewable.

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

The public sources tie Jennings to U.S. Patent No. 3306X, issued March 3, 1821, for dry scouring. The patent sits inside the damaged X-patent archive, so CultureUp names the grant while keeping the original-specification gap visible.

The person in the record

The reviewed profile sources describe Jennings as a free Black New Yorker, tailor, and abolitionist supporter. This page does not add private family or church evidence beyond public, reviewable records.

Place attached to the claim

New York matters here because the story is about free Black citizenship, skilled trade, abolitionist networks, and access to federal recognition before the Civil War.

The invention

The public record identifies dry scouring as the invention frame. CultureUp does not reconstruct a technical specification that has not been recovered.

Business, labor, and use

The patent record points toward skilled work and property capacity. It does not prove business revenue, customer base, assignment history, or every person who contributed labor.

What the record cannot prove

The patent does not prove a complete biography, lineage, community standing, church record, or all economic effects of Jennings's work.

Patent records

Grant trail

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

Grant rank 1Holder rank 1x patenthigh

3306X: Dry Scouring

Thomas L. Jennings / 1821-03-03

Earliest currently verified Black American patentee in the reviewed public source trail; original X-patent specification remains unrecovered.

Residence: New York, New York
Category: clothing care / skilled trade
Source status: high
Primary sources: 3 mapped

Source trail

Claims stay tied to source limits.

Identity evidence

Institutional profiles, Baker/Murray recovery context, or public source trails that support careful Black patentee language without private proof.

institutional inventor profileinstitutional biography

Thomas Jennings

National Inventors Hall of Fame / profile page

Supports: Identifies Thomas Jennings, U.S. Patent No. 3306x, dry scouring, 1821, and the claim that he became the first Black American granted a patent.
Limit: The original patent specification remains an X-patent loss; use earliest verified wording rather than claiming no earlier Black inventor existed.
Last checked: 2026-06-08
Source URL: https://www.invent.org/inductees/thomas-jennings

institutional reportingbiographical and archive-limit context

The First African-American to Hold a Patent Invented Dry Scouring

Smithsonian Magazine / 2019

Supports: Adds context for Jennings as a free Black New Yorker, tailor, abolitionist supporter, and X-patent holder whose original patent has not been recovered.
Limit: Secondary reporting; do not treat it as the original patent case file.
Last checked: 2026-06-08
Source URL: https://www.smithsonianmag.com/innovation/first-african-american-hold-patent-invented-dry-scouring-180971394/

Archive limit

Sources that explain damaged, missing, or incomplete records so CultureUp does not overstate early patent claims.

official patent-history articlearchive-limit context

The search for lost X-patents

United States Patent and Trademark Office / 2022

Supports: Explains that the 1836 Patent Office fire destroyed specifications and scale models for nearly 10,000 early X-patents.
Limit: Does not by itself verify the content of Jennings's lost dry-scouring specification.
Last checked: 2026-06-08
Source URL: https://www.uspto.gov/blog/the-search-for-lost-x