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Patents > National tech categories: FR 6.3 & CPCs: None & Citations from after 1930: None

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None (137) · Comte Antoine Apraxine (5) · Gentil (3) · Koch (3) · de Préneuf (3) · Folacci (3) · Guégnot (3) · Gaston Tissandier (3) · Georg Wellner (3)
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None (290) · Patent FR-1878-124576 (3) · Patent FR-1881-142748 (3) · Patent FR-1881-143296 (2) · Patent FR-1897-271948 (2) · Patent FR-1898-275602 (2) · Patent DE-1892-73603 (2) · Patent FR-1893-233439 (2) · Patent FR-1893-228892 (2) · Patent FR-1892-225358 (2) · Patent FR-1891-217128 (2) · Patent FR-1890-205155 (2)
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None (145) · Armengaud jeune (18) · Blétry aîné (15) · Chassevent (14) · Desnos (14) · Société Marillier et Robelet (12) · Armengaud aîné (9) · Dumas (7) · Société Louis Gudman et Cie (7) · Casalonga (6) · Dieuaide (6) · Émile Barrault (6) · Josse (5) · Thirion (5) · Société Matray frères (4) · Fayollet (4) · Albert Cahen (3) · Bardin (3) · Caron (3)
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