Patent FR-1909-401863.12307

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This is a 1st addition to a French patent filed 11 aug 1908, number 401863, Patent FR-1908-401863.


It is -- unusually, I think -- in different IPC and CPC categories from the parent patent. It's an example.

Compressed air is used here to enhance the performance of propellers. Motor safety is maintained by way of improved ventilation and cooling.

Sources


Year filed 1909
Year granted 1910
Office FR
Patent number 12307
Inventors Paul Bergeon
Inventor country FR
Applicant person Paul Bergeon
Applicant firm
Applicant type INDIV
Applicant is inventor? Yes
Original title Aéroplane
English title Aeroplane
Tech fields Airplane, safety, propellers, propulsion, petroleum, ventilation
Filing date 1909/06/02
Full specification filed date
Application number 12307D
Grant date 1910/06/08
Granted? Yes
Publication date 1910/08/29
Supplementary to patent Patent FR-1908-401863
Related to aircraft? Yes
Serial number
Patent agent Armengaud jeune
Assigned to
National tech categories FR 6.4
IPCs IPC B64C39/00
CPCs CPC B64C39/00
Family year 1908
First filing? No
Cites these patents
Citations from after 1930
Application ID 18717381
INPADOC family ID 5197239
Number of text pages 2
Number of diagram pages 1
Number of figures 4
Number of claims 6