Drilldown: Patents

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Patents > Office : DE or RU or SE & National tech categories : DE 77h or DE 77h.5 or None & CPCs : CPC B64B1/40 or CPC B64C2700/6295 or CPC B64C3/00

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frame (20) · airplane (17) · construction (14) · None (13) · biplane (8) · design (7) · wings (6) · fuselage (5) · LTA (4) · balloon (3) · Tragfläche (3) · subsystem (3) · metal (2) · monoplane (2) · aerodynamics (2) · motors (2) · triplane (2) · wing (2)
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Showing below up to 49 results in range #1 to #49.

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