Drilldown: Patents

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Patents > Year filed: 1910 - 1919 & IPCs: IPC B64C23/00 & Number of claims: 4-40

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Office:
Inventors:
None (2) · Walter Fisher Luff (2) · Gustav Mees (2) · Ernest William Welsh (2) · Otto Sack (2) · Alfred William Turner (2)
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Applicant person:
None (2) · Alfred William Turner (2) · Walter Fisher Luff (2) · Gustav Mees (2) · Otto Sack (2) · Ernest William Welsh (2)
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Applicant is inventor:
Tech fields:
None (22) · airplane (13) · hybrid (9) · propulsion (7) · frame (7) · design (5) · helicopter (5) · whole (4) · propellers (4) · heavier-than-air (4) · lift (4) · construction (4) · ascension (3) · gyroscope (3) · stability (3) · propeller (3)
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None (3)
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Citations from after 1930:
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