Drilldown: Patents
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aerodynamics (4) ·
airplane (1) ·
airship (1) ·
Ascension (2) ·
heavier-than-air (6) ·
helicopter (12) ·
Ignition (1) ·
Illimination (1) ·
Illumination (8) ·
instrument (1) ·
lift (2) ·
lighting (2) ·
LTA (3) ·
Parachutes (6) ·
propeller (10) ·
Propellers (2) ·
propulsion (5) ·
Sustentation (1) ·
takeoff (8) ·
whole (2)
None (6) ·
AT 74 (3) ·
AU 90.3 (1) ·
AU 90.5 (1) ·
CH 129b (1) ·
DK 77 (1) ·
FR 6.4 (4) ·
HU V/h (3) ·
USPC 244/72 (2)
Showing below up to 21 results in range #1 to #21.
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- Calendar: Year filed
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