Drilldown: Patents

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Patents > Inventor country: None

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None (3124) ·   (7) · Patent FR-1880-139386 (3) · DE79446 (2) · Patent DE-1899-123884 (2) · Patent FR-1900-299924 (2) · Patent BE-1913-253298 (2) · Patent FR-1881-143264 (2) · Patent US-1911-1109891 (2) · Patent US-1913-04-21 George Raymond Lawrence (2) · 1 (2)
Patent agent:
None (3000) · Desnos (13) · Blétry aîné (11) · Armengaud jeune (10) · Dieuaide (8) · Chassevent (7) · Société Marillier et Robelet (6) · Dumas (5) · Thirion (4) · Marks & Clerk (4) · Nauhardt (4) · Société Louis Gudman et Cie (4) · Casalonga (4) · Armengaud aîné (4)
National tech categories:
None (2583) · FR 6.3 (191) · GB 4 propel & steer (24) · GB 4 with buoyant (22) · GB 4 (19) · USPC 244/147 (18) · USPC 244/139 (18) · USPC 244/142 (16) · BE K (15) · USPC 244/153R (13) · GB 4 without buoyant (13) · DE 77 (12) · USPC 244/53A (9) · USPC 244/149 (9) · FR 6.4 (9) · GB 4 aërostats (8) · DE 77h.5 (8) · FR 5 (8)
IPCs:
None (3133) · IPC B64C39/00 (7) · IPC B64C23/00 (6) · IPC B64C11/00 (5) · IPC B64B1/00 (3) · IPC B64C3/00 (3) · IPC F41G3/24 (3) · IPC B64C17/00 (3) · IPC B64C13/00 (3) · IPC B63H1/12 (3)
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