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Patents > Year granted: 1913 & IPCs: None & Number of text pages: 5-30

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Inventors:
Jan Jaakson (2) · Alexander Albert Holle (2) · Edmund Sparmann (2) · De Bert Hartley (2) · Lewis Ginter Young (2)
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Applicant person:
None (5) · Jan Jaakson (2) · Edmund Sparmann (2) · De Bert Hartley (2)
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Tech fields:
airplane (21) · frame (13) · None (12) · stability (11) · wings (11) · design (9) · rudder (7) · propulsion (6) · automatic stability (5) · control (5) · propellers (5) · biplane (4) · wheels (4) · aerodynamics (4) · navigation (4) · marine (4)
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National tech categories:
HU V/h (7) · None (6) · USPC 244/233 (4) · USPC 244/45R (2) · AT 77d (2) · FR 6.4 (2) · CH 129b (2) · USPC 244/79 (2) · USPC 244/93 (2)
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