Drilldown: Patents

Patents > Grant date: June 20, 1912

Use the filters below to narrow your results.

Year filed:

(There are no values for this filter)

Year granted:

(There are no values for this filter)

Office:

FR (3) · GB (1)

Inventors:

Albert Lebrun (1) · François d’Astanières (1) · Simon-Louis-Clément Janvier (2) · Spencer MacDougal Brown (1)

Inventor country:

FR (3) · US (1)

Inventor location:

None (4)

Applicant person:

Albert Lebrun (1) · François d’Astanières (1) · Simon-Louis-Clément Janvier (2) · Spencer MacDougal Brown (1)

Applicant firm:

None (4)

Applicant type:

INDIV (4)

Applicant is inventor:

Yes (4)

Tech fields:

None (1) · airplane (1) · automatic stability (1) · design (1) · flapping (1) · orthopter (1) · propulsion (1) · rudder (1) · stability (1) · sustentation (1) · wings (2)

Filing date:

April 6, 1912 (2) · April 10, 1912 (1) · April 19, 1912 (1)

Full specification filed date:

None (4)

Application number:

191209297D (1) · 442419D (1) · 442426D (1) · 442427D (1)

Grant date:

June 20, 1912 (4)

Granted:

Yes (4)

Publication date:

August 31, 1912 (3)

Supplementary to patent:

None (4)

Related to aircraft:

1 (3) · Yes (1)

Patent agent:

Armengaud jeune (1) · J. S. Withers & Spooner (1) · None (2)

Assigned to:

None (4)

National tech categories:

None (1) · FR 6.4 (3)

IPCs:

IPC B64C11/00 (2) · IPC B64C17/00 (1) · IPC B64C39/00 (1)

CPCs:

CPC B64C11/006 (2) · CPC B64C17/00 (1) · CPC B64C2700/6214 (1) · CPC B64C2700/6295 (1) · CPC B64C39/10 (1)

Family year:

(There are no values for this filter)

First filing:

Yes (4)

Cites these patents:

None (4)

Citations from after 1930:

None (1)

Number of text pages:

2 (1) · 3 (2) · 4 (1)

Number of claims:

1 (2) · 4 (1) · 6 (1)

Number of diagram pages:

1 (3) · 2 (1)

Number of figures:

3 (2) · 5 (2)

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