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Patents > CPCs : CPC B64B1/40 or CPC B64C2700/6281 & Number of diagram pages: 2-7

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Inventors:
None (3) · Édouard-Jean Bigourdan (2) · Henri-Alphonse-Désiré Hervé (2) · Peter Pitcairn Carmichael (2) · Ralph Hazlett Upson (2) · Alexis Beurrier (2) · William Everett Sylvester Coyne (2)
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Applicant person:
None (5) · Édouard-Jean Bigourdan (2) · Henri-Alphonse-Désiré Hervé (2) · Peter Pitcairn Carmichael (2) · Alexis Beurrier (2)
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Tech fields:
LTA (24) · helicopter (18) · balloon (15) · stability (10) · parachute (8) · frame (7) · propulsion (7) · airplane (7) · navigation (7) · propeller (6) · None (6) · airship (6) · safety (5) · hybrid (5) · airfoil (4) · design (4) · car (4) · propellers (4) · kite (4) · rudder (4)
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None (7)
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Citations from after 1930:
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