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Patents > Inventor country : NL or RO & Filing date: 1900 - 1999 & First filing: No

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Tech fields:
airplane (18) · None (10) · design (10) · Construction (8) · frame (8) · propellers (7) · LTA (6) · aerodynamics (6) · wings (6) · propeller (5) · control (5) · airfoil (4) · fuselage (3) · helicopter (3) · navigation (3) · wheels (3) · stability (3)
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CPCs:
None (7) · CPC B64C39/00 (5) · CPC B64C2700/6295 (4) · CPC B64C27/28 (2) · CPC B64C2700/629 (2) · CPC B64C39/12 (2) · CPC B64C23/005 (2) · CPC B64B1/58 (2) · CPC B64B1/00 (2)
First filing: (Click arrow to add another value)
Citations from after 1930:
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Showing below up to 44 results in range #1 to #44.

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