Drilldown: Patents

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Patents > Publication date: 1920 - 1929 & Assigned to: None & Number of claims: 4-50

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Office:
Inventors:
None (24) · Anton Flettner (3) · Robert Kemp (3) · Ernst Heinkel (3) · Rumpler-Werke G.m.b.H. in Berlin-Johannisthal (2) · Käthe Paulus (2) · Charles Arthur Wragg (2) · Hellmuth Hirth (2) · Antoine Cazanave (2) · Alfredo Guillermo Leigh (2) · Vilmos Zurowec (2)
Inventor country:
Applicant person:
None (34) · Ernst Heinkel (3) · Anton Flettner (3) · Antoine Cazanave (2) · Käthe Paulus (2) · Vilmos Zurowec (2) · Alfredo Guillermo Leigh (2)
Applicant is inventor:
Tech fields:
airplane (32) · design (22) · frame (19) · construction (17) · propellers (14) · wings (13) · subsystem (9) · military (9) · control (8) · propulsion (7) · aerodynamics (7) · biplane (6) · motors (6) · chassis (6) · sustentation (5) · lift (5)
Full specification filed date:
Application number:
None (37)
Granted:
Publication date:
Supplementary to patent:
None (53) · Patent 1915-11-05 Käthe Paulus (2) · Patent US-1918-1589780 (2)
Related to aircraft:
Assigned to: (Click arrow to add another value)
IPCs:
None (27) · IPC B64C3/00 (8) · IPC B64C13/00 (5) · IPC B64C1/00 (5) · IPC B64D27/00 (3) · IPC B64C9/02 (3) · IPC B64C39/00 (3) · IPC B64C35/00 (3) · IPC B64C23/00 (3) · IPC B64C17/00 (3) · IPC B64C3/18 (2) · IPC B64C3/54 (2) · IPC B64C1/26 (2)
CPCs:
None (28) · CPC B64C3/00 (8) · CPC B64C13/00 (6) · CPC B64C2700/6235 (4) · CPC B64C2700/6233 (4) · CPC B64C9/02 (3) · CPC B64C23/005 (3) · CPC B64C17/00 (3) · CPC B64D27/00 (3) · CPC B64C2700/6274 (2) · CPC B64C39/00 (2) · CPC B64C35/008 (2) · CPC B64C35/00 (2) · CPC B64C1/26 (2) · CPC B64C3/54 (2) · CPC B64B1/64 (2)
First filing:
Cites these patents:
Citations from after 1930:
Number of text pages:
Number of claims:
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