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Patents > Tech fields: stability & IPCs : IPC B64C17/00 or IPC B64C39/00

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None (234) · Patent FR-1910-415470 (3) · Patent DE-1911-11-16 Otto Albin Budig (3) · Patent IT-1910-10-17 Carlo Navaro (3) · Patent NO-1915-12-15 Carl Alfred Johansson (3)
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None (87) · Armengaud jeune (24) · None (23) · E. Blétry (13) · Marks & Clerk (11) · J. Germain (11) · Lavoix et Mosès (9) · J. Bonnet-Thirion (8) · Abel & Imray‎ (8) · Charles Dony (8) · Boult, Wade & Tennant (5) · Herbert Haddan & Co. (5) · H. Boettcher fils (5)
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