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Patents > Office : CA or GB & CPCs: None

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Office: (Click arrow to add another value)
Inventor country:
None (1192) · GB (232) · US (146) · DE (93) · FR (77) · CA (25) · AU (13) · AT (11) · HU (10) · CH (10) · IT (8) · RU (7) · BE (7) · NZ (4) · AH (4) · SE (3) · ES (3) · BR (3) · PE (3) · Prussia (3)
Applicant is inventor:
Application number:
None (1790)
Granted:
Supplementary to patent:
None (1583) ·   (11)
Patent agent:
None (1450) · Haseltine, Lake & Co. (23) · Marks & Clerk (20) · Boult, Wade & Tennant (18) · Abel & Imray (14) · W. P. Thompson & Co. (12) · None (11) · Herbert Haddan & Co. (11) · Wheatley & Mackenzie (8) · G. F. Redfern & Co. (8) · Brierley & Howard (7) · J. Owden O'Brien (6) · Boult, Wade & Kilburn (6) · Hy. Fairbrother (6) · Munn & Co. (5) · Phillips & Leigh (5) · Harris & Mills (5) · Jensen & Son (5) · Alfred Julius Boult (5)
National tech categories:
None (1560) · GB 4 propel & steer (67) · 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) · CA 244/24 (8) · GB 4 parachutes (7) · GB 122 aero steam engines (6) · CA 244/12 (5) · GB 4 military (5) · GB 4 cars and cabins (5)
CPCs: (Click arrow to add another value)
First filing:
Citations from after 1930:
Number of diagram pages:

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