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Patents > Year granted: 1912 & Granted: Yes

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FR (455) · US (424) · DE (173) · GB (92) · None (60) · AT (31) · IT (29) · RU (23) · BE (20) · HU (18) · CH (15) · AU (7) · CA (7) · VN (5) · RO (5) · MX (4) · Prussia (4) · ES (4) · DK (4)
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IPCs:
None (699) · IPC B64C17/00 (91) · IPC B64C39/00 (82) · IPC B64C1/00 (72) · IPC B64C11/00 (27) · IPC B64C25/00 (26) · IPC B64B1/00 (23) · IPC B64C3/00 (21) · IPC B64C3/38 (18) · IPC B64C3/56 (17) · IPC B64D17/00 (16) · IPC B64C35/00 (16) · IPC B64C11/16 (14) · IPC B64C23/00 (13) · IPC B64C17/06 (13) · IPC B64C33/02 (12) · IPC B64C3/54 (11) · IPC B64B1/58 (10) · IPC B64C13/00 (10)
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