Drilldown: Patents

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Patents > Filing date: 1910 - 1919 & Citations from after 1930: 2-5 & Number of text pages: 1-2

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Office:
Inventors:
None (2) · John J. Rectenwald (2) · Spencer Heath (2)
Inventor country:
Applicant person:
None (2) · John J. Rectenwald (2) · Spencer Heath (2)
Applicant type:
Applicant is inventor:
Tech fields:
None (18) · propeller (5) · stability (4) · frame (4) · propellers (4) · parachute (3) · safety (3) · propulsion (3) · airplane (3) · marine (2) · LTA (2) · aerial propeller (2) · rudder (2) · military (2) · wheels (2) · windmill (2) · helicopter (2)
Full specification filed date:
Application number:
None (10)
Granted:
Publication date:
Related to aircraft:
Patent agent:
Victor J. Evans (5) · Munn & Co. (4) · None (4) · Eric W. Walford (2)
National tech categories:
None (23) · FR 6.4 (4) · USPC 244/234 (2) · USPC 74/471R (2) · USPC 244/35R (2) · USPC 244/3.23 (2)
CPCs:
CPC B64C2700/6295 (3) · CPC B64C39/08 (3) · CPC B64C13/00 (3) · CPC B64C2001/0081 (2) · CPC B64C3/56 (2) · CPC B64C25/62 (2) · CPC B64C11/006 (2) · CPC Y02E10/74 (2) · CPC B64C27/82 (2) · CPC B64C2700/6235 (2) · CPC B64B1/40 (2) · CPC B64C3/00 (2) · CPC Y10T74/20012 (2) · CPC B64C2025/325 (2)
First filing:
Cites these patents:
Citations from after 1930:
Number of text pages:
Number of diagram pages:

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