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Patents > Tech fields: helicopter & Number of text pages: 2-3 & Number of diagram pages: 2-6

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Office:
Inventors:
Édouard-Jean Bigourdan (4) · Alexis Beurrier (4) · Louis Lacoin (3) · Peter Pitcairn Carmichael (2) · Samuel Dimmick Mott (2) · Thomas Augustus Dring (2)
Inventor country:
Applicant person:
None (4) · Alexis Beurrier (4) · Louis Lacoin (3) · Peter Pitcairn Carmichael (2) · Samuel Dimmick Mott (2)
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Application number:
None (12)
Granted:
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Related to aircraft:
Patent agent:
None (14) · Victor J. Evans (5) · None (4) · C. A. Snow & Co. (4) · Munn & Co. (3) · H. B. Willson & Co. (2)
National tech categories:
None (17) · FR 6.4 (14) · USPC 244/6 (11) · USPC 244/17.21 (5) · USPC 244/17.19 (4) · USPC 244/65 (4) · USPC 244/20 (3) · USPC 244/7R (3) · USPC 244/17.15 (3) · USPC 244/66 (3) · USPC 244/100R (2) · USPC 244/12.1 (2) · USPC 244/60 (2) · USPC 244/17.11 (2) · USPC 244/64 (2) · USPC 244/9 (2) · USPC 244/51 (2) · USPC 416/123 (2)
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Cites these patents:
Citations from after 1930:
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