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Patents > CPCs : CPC B64C2700/6274 or CPC B64C31/02 & Number of claims: 4-40

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Office:
Inventors:
Ernest William Welsh (2) · Alfred William Turner (2) · Walter Fisher Luff (2) · Thomas Augustus Dring (2) · Otto Sack (2)
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Applicant person:
None (3) · Alfred William Turner (2) · Walter Fisher Luff (2) · Thomas Augustus Dring (2) · Ernest William Welsh (2) · Otto Sack (2)
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Tech fields:
None (22) · Airplane (13) · Propulsion (10) · Design (9) · Helicopter (9) · Frame (9) · Hybrid (8) · Propellers (7) · Construction (5) · Whole (5) · Ascension (4) · stability (4) · glider (4) · sustentation (3) · propeller (3) · Control (3) · heavier-than-air (3)
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None (4)
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Citations from after 1930:
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Showing below up to 51 results in range #1 to #51.

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