Patent US-1917-1339006

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  • Inventor location: 1505 Albemarle road, Brooklyn, in the county of Kings and the State of New York
  • Firm location: New York, NY, a Corporation of New York


Year filed 1917
Year granted 1920
Office US
Patent number 1339006
Inventors Lawrence Burst Sperry
Inventor country US
Applicant person Lawrence Burst Sperry
Applicant firm Lawrence Sperry Aircraft Company, Inc.
Applicant type COMPANY + INDIV
Applicant is inventor? Yes
Original title Aeroplane Height-Indicator
English title Aeroplane height indicator
Tech fields instrument, airplane, altitude, measurement
Filing date 1917/07/13
Full specification filed date
Application number
Grant date 1920/05/04
Granted? Yes
Publication date
Supplementary to patent
Related to aircraft? Yes
Serial number 180268
Patent agent Herbert H. Thompson
Assigned to Lawrence Sperry Aircraft Company
National tech categories
Family year 1917
First filing? 1
Cites these patents
Citations from after 1930
Application ID
Number of text pages 3
Number of diagram pages 1
Number of figures 10
Number of claims 7