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The Patent Archive

Numbers you can check yourself.

Each entry lists a patent number recorded in a public patent office archive. We do not reproduce document images we have no rights to — we give you the number so you can pull the original.

18 patent records

Documented patents in the archive
NumberPatent titleInventorGrantedField
3306X(opens the public patent index in a new tab)Dry scouring of clothesThomas L. Jennings3 March 1821Everyday Life
129,843(opens the public patent index in a new tab)Improvement in lubricators for steam-enginesElijah McCoy12 July 1872Transportation
252,386(opens the public patent index in a new tab)Process of manufacturing carbonsLewis Howard Latimer17 January 1882Everyday Life
274,207(opens the public patent index in a new tab)Lasting machineJan Ernst Matzeliger20 March 1883Industry & Materials
322,177(opens the public patent index in a new tab)Cabinet-bedSarah E. Goode14 July 1885Everyday Life
371,207(opens the public patent index in a new tab)ElevatorAlexander Miles11 October 1887Architecture & Infrastructure
373,915(opens the public patent index in a new tab)Induction telegraph systemGranville T. Woods29 November 1887Transportation
473,653(opens the public patent index in a new tab)Ironing boardSarah Boone26 April 1892Everyday Life
1,113,675(opens the public patent index in a new tab)Breathing deviceGarrett A. Morgan13 October 1914Medicine & Health
1,475,024(opens the public patent index in a new tab)Traffic signalGarrett A. Morgan20 November 1923Transportation
2,475,841(opens the public patent index in a new tab)Removable cooling unit for compartmentsFrederick McKinley Jones12 July 1949Transportation
3,482,037(opens the public patent index in a new tab)Home security system utilizing television surveillanceMarie Van Brittan Brown2 December 1969Everyday Life
4,229,761(opens the public patent index in a new tab)Illusion transmitterValerie L. Thomas21 October 1980Science & Engineering
4,591,071(opens the public patent index in a new tab)Squirt gunLonnie G. Johnson27 May 1986Everyday Life
4,744,360(opens the public patent index in a new tab)Apparatus for ablating and removing cataract lensesPatricia E. Bath17 May 1988Medicine & Health
4,879(opens the public patent index in a new tab)Improvement in sugar-makingNorbert Rillieux1846Industry & Materials
3,118,022(opens the public patent index in a new tab)Electroacoustic transducerJames E. West14 January 1964Technology & Computing
3,478,216(opens the public patent index in a new tab)Image converter for detecting electromagnetic radiationGeorge R. Carruthers11 November 1969Space & Aerospace

A patent proves a claim was filed and granted — not that the device was built, sold or successful, and not that no one else worked on the same problem. Read patents as evidence of a documented claim on a specific date.