Drilldown: Patents

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Patents > Tech fields: propulsion & Family year: 1890 - 1899 & Number of text pages: 2-3

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Inventors:
Stewart Cairncross (3) · Georg Wellner (2) · Burr Frank Barnes (2) · Rudolf Krocker (2)
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None (19)
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National tech categories:
DE 77 (15) · None (5) · USPC 244/28 (3) · USPC 244/30 (3) · GB 4 propel & steer (2) · USPC 416/116 (2) · GB 4 without buoyant (2) · HU V/h (2) · DE 77h (2) · USPC 180/220 (2) · USPC 244/27 (2) · USPC 244/26 (2)
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