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Patents > Office : BE or DK or GB & CPCs: None

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Office: (Click arrow to add another value)
Inventor country:
None (1205) · GB (241) · FR (200) · BE (153) · DE (116) · US (82) · IT (16) · AT (14) · CH (11) · RU (11) · HU (10) · AU (9) · ES (7) · SE (7) · AH (6) · NO (6) · DK (5)
Applicant is inventor:
Granted:
Patent agent:
None (1514) · A. Wunderlich & Cie, Ingénieurs-Conseils (57) · Haseltine, Lake & Co. (23) · Raclot (22) · Duvinage (21) · Marks & Clerk (20) · Boult, Wade & Tennant (18) · J. Gevers (16) · Abel & Imray (14) · Kirkpatrick (12) · W. P. Thompson & Co. (12) · Herbert Haddan & Co. (11) · De Visscher et Graetz (11) · None (11) · E. et G. Bede (9) · Biebuyck (8) · Wheatley & Mackenzie (8) · G. F. Redfern & Co. (8) · Brierley & Howard (7)
National tech categories:
None (1545) · BE K (324) · GB 4 propel & steer (67) · DK 77 (46) · GB 4 with buoyant (44) · GB 4 without buoyant (35) · GB 4 (24) · GB 4 aërostats (21) · GB 4 aëroplanes (20) · GB 4 framework (14) · GB 4 motors (9) · GB 4 parachutes (7) · GB 122 aero steam engines (6) · DK 65 (6) · GB 4 military (5) · GB 4 cars and cabins (5) · GB 4 aërial railways (4) · GB 123 aero steam generators (4)
CPCs: (Click arrow to add another value)
First filing:
Citations from after 1930:
Number of diagram pages:

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