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Patents > Year granted: 1912 & Applicant firm: None & Grant date: 1900 - 1999

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FR (362) · US (361) · DE (101) · GB (68) · IT (33) · AT (24) · RU (20) · HU (14) · BE (13) · CH (10) · None (9) · CA (8) · AU (6) · RO (4) · ES (4) · AH (3) · MX (3) · VN (3) · DK (3)
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None (946) · Seine (17) · Paris (11) · Nord (8) · Budapest (5) · New York (5) · Pisa (4) · New York City (3) · Chicago (3) · Michigan (3) · Bouches-du-Rhône (3) · New York county (3) · California (3)
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FR 6.4 (334) · None (248) · HU V/h (25) · FR 6.2 (16) · USPC 244/90R (16) · USPC 244/80 (14) · AT 77d (14) · USPC 244/45R (14) · USPC 244/22 (13) · USPC 244/35R (11) · USPC 244/93 (10) · RU Group V (10) · USPC 244/76R (10) · BE K (8) · USPC 244/6 (8) · USPC 244/144 (8) · USPC 244/87 (8) · USPC 244/48 (8)
IPCs:
None (511) · IPC B64C17/00 (91) · IPC B64C39/00 (71) · IPC B64C1/00 (69) · IPC B64C11/00 (22) · IPC B64C25/00 (19) · IPC B64C3/00 (19) · IPC B64B1/00 (14) · IPC B64C3/38 (14) · IPC B64C35/00 (14) · IPC B64D17/00 (13) · IPC B64C3/54 (12) · IPC B64C33/02 (12) · IPC B64C23/00 (11) · IPC B64C3/56 (10) · IPC B64C17/06 (10) · IPC B64B1/58 (8) · IPC B63H1/12 (7)
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