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Patents > Tech fields: helicopter & Number of figures: 6-9

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Office:
Inventors:
Thomas Augustus Dring (3) · Isaac Bell (2) · Édouard-Jean Bigourdan (2) · Alexis Beurrier (2) · August Smikalla (2) · Louis Lacoin (2)
Inventor country:
Applicant person:
None (4) · Thomas Augustus Dring (2) · Louis Lacoin (2) · August Smikalla (2) · Isaac Bell (2) · Alexis Beurrier (2)
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None (11)
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Patent agent:
None (14) · Munn & Co. (3) · Phillipss (2) · H. B. Willson & Co. (2) · J. S. Withers & Spooner (2) · H. D. Fitzpatrick & Co. (2) · Victor J. Evans (2)
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National tech categories:
None (16) · FR 6.4 (14) · USPC 244/6 (7) · HU V/h (3) · USPC 244/22 (2) · USPC 244/9 (2) · USPC 244/7R (2) · USPC 244/66 (2) · USPC 244/65 (2) · USPC 244/51 (2) · USPC 244/20 (2) · AU 90.3 (2)
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