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Patents > Year granted: 1912 & Applicant firm: None

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US (436) · FR (433) · DE (162) · GB (119) · None (67) · AT (33) · IT (32) · RU (23) · HU (20) · BE (19) · CH (18) · AU (9) · CA (9) · RO (5) · Prussia (5) · VN (5) · DK (4) · ES (4) · NZ (4) · MX (4)
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IPCs:
None (763) · IPC B64C17/00 (93) · IPC B64C39/00 (80) · IPC B64C1/00 (72) · IPC B64C11/00 (26) · IPC B64C25/00 (23) · IPC B64B1/00 (19) · IPC B64C3/00 (19) · IPC B64D17/00 (17) · IPC B64C3/38 (17) · IPC B64C35/00 (16) · IPC B64C3/56 (13) · IPC B64C23/00 (13) · IPC B64C17/06 (13) · IPC B64C11/16 (12) · IPC B64C33/02 (12) · IPC B64C3/54 (11) · IPC B64C13/00 (10) · IPC B64B1/58 (8)
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