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Patents > Year granted: 1912 & Applicant firm: None & Granted: Yes

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FR (385) · US (368) · DE (132) · GB (76) · None (42) · IT (33) · AT (27) · RU (20) · HU (17) · BE (16) · CH (9) · CA (8) · AU (7) · ES (4) · RO (4) · MX (4) · VN (4) · AH (3) · DK (3)
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None (1048) · Seine (18) · Paris (11) · Nord (8) · Budapest (6) · New York (5) · London (3) · Bouches-du-Rhône (3) · California (3) · Michigan (3) · New York county (3) · Pisa (3) · Chicago (3) · New York City (3)
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National tech categories:
FR 6.4 (333) · None (267) · HU V/h (26) · DE 77h.5 (24) · USPC 244/90R (17) · FR 6.2 (16) · AT 77d (15) · USPC 244/80 (14) · USPC 244/45R (14) · BE K (13) · USPC 244/22 (13) · USPC 244/76R (12) · RU Group V (11) · USPC 244/35R (11) · DE 77h.6 (11) · USPC 244/93 (10)
IPCs:
None (580) · IPC B64C17/00 (92) · 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 B64C33/02 (14) · IPC B64C3/38 (14) · IPC B64B1/00 (13) · IPC B64D17/00 (12) · IPC B64C23/00 (12) · IPC B64C3/54 (12) · IPC B64C17/06 (11) · IPC B64C3/56 (10) · IPC B64C11/16 (8) · IPC B64B1/58 (8) · IPC B63H1/12 (7)
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