Drilldown: Patents

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Patents > Inventor country : IE or NO or None & Tech fields : airplane or construction or propulsion or None & Citations from after 1930: None & Number of diagram pages: None & Number of figures: None

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Inventor country: (Click arrow to add another value)
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Supplementary to patent:
None (2551) ·   (3) · Patent FR-1900-299924 (2) · Patent BE-1913-253298 (2)
Patent agent:
None (2518) · Desnos (6) · Chassevent (4) · Armengaud jeune (3) · Dumas (3) · Blétry aîné (3) · Duvinage (3) · Société Louis Gudman et Cie (2) · Émile Barrault (2) · Digeon (2) · J.H. Johnson (2)
National tech categories:
None (2230) · FR 6.3 (61) · USPC 244/139 (18) · USPC 244/147 (17) · USPC 244/142 (15) · GB 4 propel & steer (15) · USPC 244/153R (13) · GB 4 (11) · BE K (11) · USPC 244/53A (9) · GB 4 without buoyant (9) · GB 4 with buoyant (9) · USPC 244/149 (8) · USPC 244/119 (6) · USPC 244/144 (6) · USPC 244/138R (5) · USPC 244/63 (5) · USPC 244/3.1 (5) · USPC 244/65 (5)
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