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Patents > Filing date: 1912 & Grant date: 1910 - 1919 & Supplementary to patent: None

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Patent agent:
None (395) · Armengaud jeune (25) · None (20) · Charles Dony (12) · Victor J. Evans (11) · H. Bœttcher fils (10) · Hippolyte Josse (10) · Marks & Clerk (9) · Dupont et Elluin (8) · Brandon frères (7) · J. Bonnet-Thirion (7) · Schwab (6) · L. Chassevent (5) · E. Blétry (5) · Société A. Frey et de Carsalade (5) · Dom. Casalonga (5)
National tech categories:
FR 6.4 (248) · None (235) · HU V/h (20) · AT 77d (14) · USPC 244/80 (13) · USPC 244/233 (11) · USPC 244/45R (10) · USPC 244/48 (9) · USPC 244/104R (6) · USPC 244/119 (6) · FR 6.2 (6) · USPC 244/87 (6) · USPC 244/100R (6) · USPC 244/35R (6) · USPC 244/234 (6)
IPCs:
None (395) · IPC B64C17/00 (48) · IPC B64C39/00 (45) · IPC B64C1/00 (31) · IPC B64B1/00 (19) · IPC B64C3/00 (17) · IPC B64C11/00 (16) · IPC B64C3/38 (16) · IPC B64C35/00 (16) · IPC B64C3/56 (9) · IPC B64B1/58 (9) · IPC B64D17/00 (8) · IPC B64C13/00 (7) · IPC B64C25/00 (6) · IPC B64C33/00 (5) · IPC B64C3/54 (5) · IPC CPC B64C13/00 (5)
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