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Patents > CPCs : CPC B61D41/00 or CPC B64C2700/6295 or CPC B64C3/385

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None (703) · Patent BE-1912-02-07-Gramaticesco (3) · Patent FR-1912-449167 (3) · Patent FR-1908-392672 (3)
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None (409) · None (24) · Armengaud jeune (19) · Marks & Clerk (12) · J. Bonnet-Thirion (10) · Munn & Co. (9) · E. Blétry (8) · Weismann et Marx (8) · J. S. Withers & Spooner (8) · G. Petiau (7) · L. Chassevent (7) · Victor J. Evans (7) · J. Germain (7) · Y. Rabilloud et fils (7) · Schwab (6) · Boult, Wade & Tennant (6)
National tech categories:
None (396) · FR 6.4 (233) · USPC 244/45R (42) · USPC 244/13 (28) · USPC 244/48 (25) · DE 77h.5 (14) · USPC 244/90R (13) · USPC 244/99.11 (11) · USPC 244/87 (10) · USPC 244/119 (9) · USPC 244/91 (8) · USPC 244/113 (6) · USPC 244/38 (6) · USPC 244/47 (6) · USPC 244/100R (5) · USPC 244/88 (5) · USPC 244/234 (5)
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