Patent GB-1891-20136

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Propulsion apparatus, with feathering oars, for airships or submarines.

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Year filed 1891
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Office GB
Patent number 20136
Inventors A. A. Trinquier
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Tech fields propulsion, navigation, subsystem, marine
Filing date 1891-11-19
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Granted? 1
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Related to aircraft? 1
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National tech categories GB 4 propel boats
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Citations from after 1930
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