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Patents > CPCs : CPC B64B1/00 or CPC B64C33/02 & Number of text pages: 1-2

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None (313) · Seine (7) · Paris (3) · Berlin (3) · London (3) · PA (2) · Pittsburgh (2) · Rhône (2) · Allegheny county, Pennsylvania (2)
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None (259) · Patent BE-1910-12-28-Muehter (3) · Patent ES-1906-38692‎ (2) · Patent FR-1907-382794 (2) · Patent DE-1909-244441 (2) · Patent FR-1902-317598 (2) · Patent IT-1913- (2) · Patent FR-1912-446040 (2) · Patent FR-1913-472867 (2)
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None (103) · None (18) · Munn & Co. (13) · Armengaud jeune (11) · Chassevent (6) · C. Blétry (5) · Ad. Sturm (5) · Boramé et Julien (5) · Hippolyte Josse (5) · Herbert Haddan & Co. (4) · G. Petiau (4) · C. Baumann (4) · Haseltine, Lake & Co. (4) · Marks & Clerk (4) · Lavoix et Mosès (4)
National tech categories:
FR 6.4 (121) · None (44) · FR 6.3 (35) · DE 77 (22) · DE 77h.10 (20) · USPC 244/30 (18) · USPC 244/22 (17) · USPC 244/28 (11) · DE 77h.2 (10) · USPC 244/72 (8) · USPC 24/713.8 (8) · DE 77h (6) · USPC 244/26 (6) · USPC 244/25 (4) · USPC 244/67 (4) · USPC 244/125 (4) · FR 6.2 (3)
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