United States Patent and Trademark Office · official_nameUnited States Patent and Trademark Office

valid_from

1975-01-01

valid_to

null (still holds)

confidence

0.85

superseded_by

null

first seen

2026-10-27

last updated

2026-10-28

Sources

• https://www.uspto.gov/patents/milestonessecondary · uspto.gov
• https://www.wikidata.org/wiki/Q1459541secondary · wikidata.org

Supersedes

• United States Patent Office1802-01-01 to 1974-01-01 · clm_67331A71E777

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