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HARRY T AMBROSE

Overview
  • Total Patents
    52
About

HARRY T AMBROSE has a total of 52 patent applications. Its first patent ever was published in 1899. It filed its patents most often in United States. Its main competitors in its focus markets textiles and paper, computer technology and optics are CARLSEN HENNING GUNNAR, YOST WRITING MACHINE CO and ADDOGRAPH CO.

Patent filings in countries

World map showing HARRY T AMBROSEs patent filings in countries
# Country Total Patents
#1 United States 52

Patent filings per year

Chart showing HARRY T AMBROSEs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Donning George W 44
#2 Walter Edward C 7
#3 Donning George Washington 1

Latest patents

Publication Filing date Title
US1224873A Computing and recording machine.
US1224872A Calculating-machine.
US1295396A Traveling computing attachment.
US1145832A Escapement mechanism for type-writers, &c.
US1056646A Type-writer.
US1073573A Type-writer.
US970433A Tabulating device for type-writers.
US997656A Type-writer.
US1056721A Type-writer.
US1056645A Temporary line-adjusting device for type-writers.
US929841A Type-writer locking device.
US993588A Cabinet for type-writing machines.
US963727A Calculating attachment for type-writing machines.
US1013243A Calculator.
US929840A Type-writer.
US929839A Type-writer.
US826488A Type-writer.
US879815A Type-writer.
US929838A Tabulating device for type-writers.
US826487A Type-writer.