Patent US-1917-1353544

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Year filed 1917
Year granted 1920
Office US
Patent number 1353544
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? No
Original title Twin-Propeller Aeroplane
English title Twin-Propeller Aeroplane
Tech fields airplane, propellers, biplane, landing, design, skids
Filing date 1917/10/19
Full specification filed date
Application number 19738817
Grant date 1920/09/21
Granted? Yes
Publication date
Supplementary to patent
Related to aircraft? Yes
Serial number 197388
Patent agent Herbert H. Thompson
Assigned to Lawrence Sperry Aircraft Company, Inc.
National tech categories
IPCs IPC B64C9/00
CPCs CPC B64C2700/6243, CPC B64C9/00
Family year 1917
First filing? Yes
Cites these patents
Citations from after 1930
Application ID 48577736
INPADOC family ID 44132200
Number of text pages 3
Number of diagram pages 1
Number of figures 5
Number of claims 9