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Patents > Year granted: 1910 - 1919 & National tech categories : FR 6.2 or USPC 42/1.15

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Inventors:
André-Julien Mahoudeau (7) · Antoine-Padoue Filippi (6) · Louis-Marie Le Dantec (4) · Léon-Frédéric Granier (3) · Louis-Pierre-Guilhaume Balestrié (3) · Gabriel Babillot (2) · François Dergint (2)
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None (16) · 423792D (2)
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CPCs:
CPC B63H1/26 (9) · CPC B64C11/16 (8) · CPC B64C11/006 (6) · CPC B63H2001/122 (5) · CPC B64C11/04 (4) · CPC B63H1/12 (4) · CPC B63H1/20 (4) · CPC B63H1/265 (3) · CPC B64C11/00 (2) · CPC B64B1/00 (2) · CPC B63B2745/00 (2) · CPC B63H3/00 (2) · CPC B64C11/22 (2) · CPC B64C11/24 (2) · CPC B64C11/18 (2) · CPC B63H1/36 (2) · CPC B63H1/28 (2)
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