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Patents > National tech categories : CH 129b or HU V/h & Number of text pages: 5-7

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None (4) · Edmund Sparmann (2)
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Tech fields:
airplane (22) · design (12) · stability (11) · whole (8) · wings (7) · Propellers (7) · subsystem (6) · automatic stability (6) · propulsion (6) · frame (5) · Aerodynamics (5) · control (4) · navigation (4) · Lift (4)
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Showing below up to 36 results in range #1 to #36.

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