Patent FR-1919-491223

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Hydroplane, huge delay, likely associated with WWI.

Patent family descending from Patent FR-1919-491223

  • Inventor location: Seine


Year filed 1915
Year granted 1919
Office FR
Patent number 491223
Inventors Jean-Marie-Stephén Graf
Inventor country FR
Applicant person Jean-Marie-Stephén Graf
Applicant firm
Applicant type
Applicant is inventor? Yes
Original title Hydroaéroplane incapotable
English title Incapacitated hydroaeranium
Tech fields hydroplane
Filing date July 30, 1915
Full specification filed date
Application number 491223D
Grant date January 27, 1919
Granted? Yes
Publication date May 27, 1919
Supplementary to patent
Related to aircraft? Yes
Serial number
Patent agent J. Bonnet-Thirion et Breton
Assigned to
National tech categories FR 6.4
IPCs IPC B64C35/00
CPCs CPC B64C35/00, CPC B64F2700/628
Family year 1915
First filing? Yes
Cites these patents
Citations from after 1930
Application ID 19308457
INPADOC family ID 5202823
Number of text pages 3
Number of diagram pages 1
Number of figures 2
Number of claims 3