Patent IN-1910-262

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Patent IN-1912-78 is supplementary to this one and refers to it. We have a pattern of international filings based on two connected British patents.


Year filed 1910
Year granted
Office IN
Patent number 262
Inventors Thomas Augustus Dring
Inventor country GB
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English title
Tech fields helicopter, propulsion, propeller, aerodynamics
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Granted? 1
Publication date
Supplementary to patent Patent GB-1909-12556
Related to aircraft? 1
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Cites these patents
Citations from after 1930
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