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Patents > Office : DE or SE & CPCs : CPC B64C33/02 or CPC B64C35/00

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Office: (Click arrow to add another value)
Inventors:
None (10) · Henri Fabre (4) · Charles Denniston Burney (2) · Hermann Israel (2) · Friedrich Kopsch (2) · Gustav Pieske (2)
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Tech fields:
None (18) · flapping (16) · hydroaeroplane (11) · frame (9) · wing (8) · propulsion (7) · ornithopter (7) · design (5) · Subsystem (5) · marine (5) · LTA (5) · Wings (5) · airplane (5) · hybrid (4) · airship (4) · buoyancy (3)
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CPCs: (Click arrow to add another value)
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Citations from after 1930:
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Showing below up to 66 results in range #1 to #66.

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