Drilldown: Patents

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Patents > Supplementary to patent: None & Number of diagram pages: 3-4 & Number of figures: 12-13

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Office:
Inventors:
Edmund Sparmann (2) · De Bert Hartley (2)
Inventor country:
Applicant person:
None (5) · De Bert Hartley (2) · Edmund Sparmann (2)
Applicant is inventor:
Tech fields:
stability (13) · airplane (11) · frame (8) · wings (7) · None (6) · airship (6) · control (6) · rudder (6) · LTA (5) · navigation (5) · propeller (5) · automatic stability (5) · propulsion (4) · biplane (4) · construction (4) · steering (4) · design (4) · hybrid (3) · helicopter (3)
Full specification filed date:
Application number:
None (10)
Granted:
Publication date:
Supplementary to patent: (Click arrow to add another value)
Related to aircraft:
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Cites these patents:
Citations from after 1930:
Number of diagram pages:
Number of figures:

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