Drilldown: Patents

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Patents > Year filed: 1910 - 1919 & Year granted: 1912 & Granted: Yes

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FR (428) · US (366) · DE (149) · GB (83) · AT (29) · IT (24) · RU (20) · BE (19) · HU (15) · CH (15) · None (11) · AU (7) · CA (6) · RO (5) · ES (4) · VN (4) · DK (4) · Prussia (3) · MX (3)
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National tech categories:
FR 6.4 (385) · None (298) · HU V/h (30) · AT 77d (18) · FR 6.2 (18) · USPC 244/90R (16) · USPC 244/80 (15) · USPC 244/45R (12) · RU Group V (10) · BE K (10) · USPC 244/35R (10) · USPC 244/76R (9) · USPC 244/48 (9) · USPC 244/22 (9) · USPC 244/87 (9) · DE 77h.5 (9)
IPCs:
None (559) · IPC B64C17/00 (91) · IPC B64C39/00 (77) · IPC B64C1/00 (71) · IPC B64C11/00 (27) · IPC B64C25/00 (26) · IPC B64B1/00 (20) · IPC B64C3/00 (19) · IPC B64C3/38 (17) · IPC B64D17/00 (16) · IPC B64C3/56 (16) · IPC B64C35/00 (15) · IPC B64C17/06 (12) · IPC B64C23/00 (12) · IPC B64C11/16 (11) · IPC B64B1/58 (10) · IPC B64C13/00 (10) · IPC B64C3/54 (9) · IPC B64C33/02 (9)
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