French patent agents Weissmann et Marx (sometimes with the former partner spelled with one "s", Weismann) advertised their address as 90 rue d'Amsterdam, Paris. Telephone 111.16.[1].
It seems they communicated, twice at least, the list of aeronautic patents to L'Aérophile (see [1], [2]).
Patents for which Weismann et Marx was the patent agent
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Patent FR-1907-374494, Patent FR-1907-374737, Patent FR-1907-377174, Patent FR-1907-377174.8323, Patent FR-1907-380098, Patent FR-1907-380099, Patent FR-1907-382530, Patent FR-1908-377174.8770, Patent FR-1908-386257, Patent FR-1908-390256, Patent FR-1908-392975, Patent FR-1908-395571, Patent FR-1908-395572, Patent FR-1908-396839, Patent FR-1908-397368, Patent FR-1908-400578, Patent FR-1909-394427, Patent FR-1909-394438, Patent FR-1909-398292, Patent FR-1909-401686, Patent FR-1909-402080, Patent FR-1909-405533, Patent FR-1909-408195, Patent FR-1909-415214, Patent FR-1909-418560, Patent FR-1909-419009, Patent FR-1909-419308, Patent FR-1909-419741, Patent FR-1909-419742, Patent FR-1909-421302, Patent FR-1909-421385, Patent FR-1910-406292, Patent FR-1910-406865, Patent FR-1910-413534, Patent FR-1910-414874, Patent FR-1910-416378, Patent FR-1910-416495, Patent FR-1910-417385, Patent FR-1910-423074, Patent FR-1910-423883, Patent FR-1910-432182, Patent FR-1911-421783, Patent FR-1911-427503, Patent FR-1911-428407, Patent FR-1911-430234, Patent FR-1911-430646, Patent FR-1911-430647, Patent FR-1911-430690, Patent FR-1911-432120, Patent FR-1911-434187, Patent FR-1911-435764, Patent FR-1911-436568, Patent FR-1911-437405, Patent FR-1911-438486, Patent FR-1912-421302.16886, Patent FR-1912-439989, Patent FR-1912-440150, Patent FR-1912-441314, Patent FR-1912-448592, Patent FR-1912-452058, Patent FR-1913-453048, Patent FR-1913-454222, Patent FR-1913-456080, Patent FR-1913-457856, Patent FR-1913-460141, Patent FR-1913-465032, Patent FR-1914-467096, Patent FR-1914-471515, Patent FR-1915-400578.23309, Patent FR-1915-502469, Patent FR-1917-502839.21604, Patent FR-1918-513140
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Patents for which Weissman et Marx was the patent agent
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References