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Patents > Year granted: 1912 & Applicant firm: None & Tech fields: None

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FR (390) · US (381) · DE (138) · GB (99) · None (51) · IT (34) · AT (29) · RU (20) · HU (18) · BE (17) · CH (12) · AU (9) · CA (9) · ES (4) · RO (4) · MX (4) · VN (4)
Inventor location:
None (1115) · Seine (17) · Paris (11) · Nord (8) · Budapest (6) · New York (5) · Pisa (4) · Bouches-du-Rhône (3) · Chicago (3) · California (3) · Michigan (3) · New York county (3) · New York City (3) · London (3)
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National tech categories:
FR 6.4 (333) · None (329) · HU V/h (26) · DE 77h.5 (24) · USPC 244/90R (17) · FR 6.2 (16) · AT 77d (15) · USPC 244/45R (14) · USPC 244/80 (14) · BE K (14) · USPC 244/22 (13) · USPC 244/76R (12) · USPC 244/35R (11) · RU Group V (11) · USPC 244/93 (10) · DE 77h.6 (10)
IPCs:
None (644) · IPC B64C17/00 (93) · IPC B64C39/00 (74) · IPC B64C1/00 (68) · IPC B64C11/00 (23) · IPC B64C25/00 (19) · IPC B64C3/00 (19) · IPC B64C35/00 (15) · IPC B64B1/00 (14) · IPC B64C33/02 (14) · IPC B64C3/38 (14) · IPC B64D17/00 (13) · IPC B64C3/54 (12) · IPC B64C23/00 (11) · IPC B64C17/06 (11) · IPC B64C3/56 (10) · IPC B64C11/16 (8) · IPC B64B1/58 (8) · IPC B63H1/12 (7)
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