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Patents > Patent agent : Charles W. Hills or J. Germain

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Tech fields:
None (29) · stability (14) · airplane (9) · Propulsion (9) · frame (7) · construction (7) · propellers (6) · Control (6) · design (5) · aerodynamics (4) · Helicopter (4) · Hybrid (3) · lift (3) · Ascension (3) · automatic stability (3)
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None (10) · 510212D (2) · 510210D (2) · 496388D (2) · 494571D (2)
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CPCs:
CPC B64C17/00 (12) · CPC B64C2700/6295 (7) · CPC B64C39/00 (6) · CPC B64C2700/6212 (5) · CPC B64C23/005 (4) · CPC B64C2700/6274 (4) · CPC B64C2700/6216 (4) · CPC B64C17/06 (4) · CPC B64C3/18 (3) · CPC B64C3/00 (3) · CPC B64C2700/6281 (3) · CPC B64C27/12 (3) · None (3)
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Showing below up to 74 results in range #1 to #74.

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