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Patent FR-1880-135504Patent FR-1880-135504 Appareil aérostatique gouvernable dit: aéro-véloce
Patent FR-1892-220859

We have French patent agent Dumas addressed at boulevard Beaumarchais, 95, Paris.[1]

We also have him addressed at rue Saint-Georges, 29, Paris.[2]

Patents for which Dumas was the patent agent



  • Catalogue des Brevets d'Invention 1880 p.110
  • BOPI (1892, tome 12)