Drilldown: Patents

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Patents > Inventor country: US & Related to aircraft: Yes & National tech categories: USPC 244/17.21

Use the filters below to narrow your results.

Year filed:
1908 (1) · 1909 (1) · 1911 (1) · 1918 (1)
Year granted:
1909 (1) · 1912 (2) · 1923 (1)
Office:
US (4)
Inventors:
Davis L MABRY (1) · Emile Berliner (1) · Heinrich Bea (1) · William E. Pearson (1)
Inventor country: (Click arrow to add another value)
Applicant person:
None (1) · Emile Berliner (1) · John R WRIGHT (1) · William E. Pearson (1)
Applicant firm:
None (4)
Applicant type:
None (1) · INDIV (3)
Applicant is inventor:
No (1) · Yes (3)
Tech fields:
None (1) · ascension (1) · cage (1) · car (1) · frame (1) · helicopter (3) · HTA (1) · landing (1) · navigation (1) · propeller (1) · propellers (1) · propulsion (1)
Filing date:
1908 (1) · 1909 (1) · 1911 (1) · 1918 (1)
Full specification filed date:
None (4)
Application number:
None (1) · 1909529480 (1) · 1911640028 (1) · 25684318 (1)
Grant date:
1909 (1) · 1912 (2) · 1923 (1)
Granted:
Yes (4)
Publication date:
None (4)
Supplementary to patent:
None (4)
Related to aircraft: (Click arrow to add another value)
Patent agent:
None (3) · Munn & Co. (1)
Assigned to:
None (4)
National tech categories: (Click arrow to add another value)
IPCs:
None (2) · IPC B64C27/00 (1) · IPC B64C27/82 (2) · IPC F24B1/00 (1) · IPC F24B1/20 (1)
CPCs:
CPC B64C27/006 (2) · CPC B64C27/82 (2) · CPC F24B1/202 (1)
Family year:
1908 (1) · 1909 (1) · 1911 (1) · 1918 (1)
First filing:
Yes (4)
Cites these patents:
None (4)
Citations from after 1930:
None (4)
Number of text pages:
None (2) · 2 (2)
Number of claims:
None (2) · 2 (1) · 4 (1)
Number of diagram pages:
None (2) · 1 (1) · 3 (1)
Number of figures:
None (2) · 3 (2)

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