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Patents > CPCs : CPC B64C2700/6212 or CPC B64C39/005 or IPC H03G5/20

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None (220) · Patent FR-1908-396249 (5) · Patent CA-1909-126457 (2) · Patent FR-1914-476300‎‎ (2) · Patent US-1908-989022 (2) · Patent FR-1902-326476 (2) · Patent US-1914-1169695 (2) · Patent US-1916-1208684 (2) · Patent US-1915-1149680 (2)
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None (91) · None (10) · E. Blétry (8) · Munn & Co. (8) · Matray frères et Cie (7) · J. Germain (6) · Armengaud jeune (5) · Marks & Clerk (4) · Herbert Haddan & Co. (4) · Hippolyte Josse (4) · 0 (3)
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