John Thomas Havens
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John Thomas Havens was a US aero inventor.
Patents whose inventor or applicant is John Thomas Havens
- Patent GB-1915-14497 (English title: Improvements in Aeroplane Guy-wire Tighteners, Filing date: 1915-10-13)
- Patent FR-1915-486164 (English title: Improvements to tensioners for airplane cables or stays, Supplementary to patent: Patent US-1915-07-30, Filing date: 1915-10-22)
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| Countries | US |
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