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Patents > National tech categories : DE 77h.5 or USPC 244/66 & Number of diagram pages: 2-20

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None (3)
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None (9)
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Tech fields:
frame (17) · airplane (17) · propeller (10) · navigation (10) · stability (8) · propulsion (8) · construction (6) · design (6) · wheels (5) · rudder (5) · hybrid (5) · Tragfläche (4) · LTA (4) · None (3) · helicopter (3) · fuselage (3) · wings (3) · control (3) · airfoil (3) · ascension (3)
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CPCs:
CPC B64C23/005 (14) · CPC B64C27/82 (4) · CPC B64C3/00 (3) · CPC B64C17/00 (3) · CPC B64C13/00 (2) · CPC B64C2700/6295 (2)
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Showing below up to 44 results in range #1 to #44.

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