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Patents > Office : BE or ES or Other

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Inventor country:
US (3930) · FR (3875) · None (2592) · DE (1889) · GB (1553) · AT (334) · IT (288) · BE (268) · HU (204) · CH (173) · RU (135) · CA (128) · AU (95) · ES (55) · NL (50) · SE (48) · RO (45) · AH (43) · NO (39) · NZ (36)
Applicant is inventor:
Tech fields:
None (15764) · LTA (14) · airplane (11) · propellers (7) · propulsion (6) · navigation (6) · control (5) · stability (5) · Aerodynamics (4) · wings (4) · Frame (4) · propeller (3) · monoplane (3) · Lift (3) · Design (3) · landing (3)
First filing:
Citations from after 1930:
Number of diagram pages:

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