Drilldown: Patents

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Patents > Tech fields : lift or stability & IPCs : IPC B64C27/04 or None & Number of claims: 1-2

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Office:
Inventors:
None (8) · Carl Alfred Johansson (5) · Sergei Tscherwinsky (3) · Jean Georges Ramel (3)
Inventor country:
Applicant person:
None (22) · Carl Alfred Johansson (5) · Sergei Tscherwinsky (3) · Jean Georges Ramel (3) · Hjalmar Pålson (2) · Max Richter (2) · Eduard Penkala (2) · Louis Brennan (2) · Edwin Vorliček (2) · József Marek (2) · Emanuel Kalisch (2) · Étienne Carret (2) · John Wills Cloud (2) · Jean-Jules Cambou (2) · Giulio Silvestri (2) · Adrien Schmitt (2) · Gustave Plaisant (2) · Sándor Temesváry (2) · Heinrich Bauer (2) · Auguste-Pierre Biais (2)
Applicant is inventor:
Tech fields: (Click arrow to add another value)
Full specification filed date:
Application number:
None (71)
Granted:
Supplementary to patent:
None (75) · Patent NO-1915-12-15 Carl Alfred Johansson (4) · Patent FR-1909-399456 (3) · Patent SE-1906-25199 (3) · Patent AT-1913-66955 (2) · Patent FR-1912-447782 (2) · Patent FR-1909-403985 (2)
Related to aircraft:
Patent agent:
None (85) · E. Blum & Co. (2) · F. W. Le Tall (2) · Victor J. Evans (2)
National tech categories:
HU V/h (25) · AT 77d (20) · None (16) · CH 129b (7) · DE 77 (7) · RU Group V (6) · DK 77 (5) · USPC 244/80 (3) · FR 6.4 (3) · DE 77h.5 (3) · USPC 244/82 (2) · USPC 244/90R (2) · USPC 244/79 (2) · USPC 244/38 (2) · USPC 244/60 (2) · USPC 244/48 (2)
IPCs: (Click arrow to add another value)
First filing:
Citations from after 1930:
Number of text pages:
Number of claims:
Number of diagram pages:

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