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.
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17 patent records
Documented patents in the archive Number Patent title Inventor Granted Field 129,843 Improvement in lubricators for steam-engines Elijah McCoy 12 July 1872 Transportation 252,386 Process of manufacturing carbons Lewis Howard Latimer 17 January 1882 Everyday Life 274,207 Lasting machine Jan Ernst Matzeliger 20 March 1883 Industry & Materials 322,177 Cabinet-bed Sarah E. Goode 14 July 1885 Everyday Life 371,207 Elevator Alexander Miles 11 October 1887 Architecture & Infrastructure 373,915 Induction telegraph system Granville T. Woods 29 November 1887 Transportation 473,653 Ironing board Sarah Boone 26 April 1892 Everyday Life 1,113,675 Breathing device Garrett A. Morgan 13 October 1914 Medicine & Health 1,475,024 Traffic signal Garrett A. Morgan 20 November 1923 Transportation 2,475,841 Removable cooling unit for compartments Frederick McKinley Jones 12 July 1949 Transportation 3,482,037 Home security system utilizing television surveillance Marie Van Brittan Brown 2 December 1969 Everyday Life 4,229,761 Illusion transmitter Valerie L. Thomas 21 October 1980 Science & Engineering 4,591,071 Squirt gun Lonnie G. Johnson 27 May 1986 Everyday Life 4,744,360 Apparatus for ablating and removing cataract lenses Patricia E. Bath 17 May 1988 Medicine & Health 4,879 Improvement in sugar-making Norbert Rillieux 1846 Industry & Materials 3,118,022 Electroacoustic transducer James E. West 14 January 1964 Technology & Computing 3,478,216 Image converter for detecting electromagnetic radiation George R. Carruthers 11 November 1969 Space & 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.