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Patents > CPCs : CPC B61D41/00 or CPC B64C23/005 & Citations from after 1930: None

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None (261) · Patent FR-1909-410140 (3) · Patent AT-1909-40038 (2) · Patent FR-1908-394254‎ (2) · Patent FR-1915-525800 (2) · Patent DE-1910-06-18 Carl Hanschke (2) · Patent DE-1909-220044 (2) · Patent FR-1909-404954 (2)
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None (170) · None (8) · G. de Mestral et F. Harlé (4) · J. Germain (4) · Victor J. Evans (4) · Marks & Clerk (4) · W. P. Thompson & Co. (3) · Armengaud jeune (3) · Munn & Co. (3) · C. Blétry (3) · J. Bonnet-Thirion (3) · Rigot et Prévost (3)
National tech categories:
None (143) · FR 6.4 (74) · USPC 244/6 (26) · USPC 244/66 (14) · USPC 244/12.1 (14) · USPC 244/60 (5) · USPC 244/139 (5) · DE 77 (4) · USPC 244/80 (4) · USPC 244/100R (3) · FR 6.3 (3) · USPC 244/104R (3) · USPC 244/65 (2) · USPC 244/231 (2) · DE 77h.5 (2) · USPC 244/35R (2) · DE 77h (2) · USPC 244/48 (2) · USPC 244/51 (2) · USPC 244/53R (2)
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