Drilldown: Patents

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Patents > Applicant firm: None & National tech categories : USPC 244/80 or None & Family year: 1900 - 1909

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Inventor country:
None (855) · US (312) · FR (292) · GB (291) · DE (146) · AT (23) · HU (20) · CH (19) · BE (18) · RU (16) · IT (12) · NZ (10) · SE (9) · AH (8) · ES (7) · CA (6) · NL (6) · NO (6)
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Patent agent:
None (1489) · Marks & Clerk (49) · Boult, Wade & Tennant (35) · Haseltine, Lake & Co. (28) · Abel & Imray (26) · None (25) · Herbert Haddan & Co. (23) · Wheatley & Mackenzie (12) · G. F. Redfern & Co. (11) · Brierley & Howard (11) · Lloyd Wise & Co. (8) · J. Owden O'Brien (8) · Hy. Fairbrother (8) · W. P. Thompson & Co. (7) · W. H. Beck & Co. (7) · Browne & Co. (7) · Brewer & Son (6) · Munn & Co. (6) · Johnsons & Willcox (6) · Edward Evans & Co. (6)
National tech categories: (Click arrow to add another value)
IPCs:
None (1725) · IPC B64C17/00 (46) · IPC B64C1/00 (40) · IPC B64C39/00 (39) · IPC B64C3/38 (26) · IPC B64C23/00 (17) · IPC B64C13/00 (15) · IPC B64C11/00 (14) · IPC B64B1/00 (14) · IPC B64B1/58 (11) · IPC B64C33/02 (9) · IPC B64B1/62 (9) · IPC B63H1/12 (8) · IPC B64C25/00 (8) · IPC B64C27/04 (8) · IPC B64C17/06 (7) · IPC B64D27/00 (6) · IPC B64C3/54 (6) · IPC B64C35/00 (5) · IPC B64C31/06 (5)
First filing:
Cites these patents:
None (2046) · Patent GB-1901-346 (2) · 1 (2)
Citations from after 1930:

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