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Patents for John Henry Hamilton
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
456,505	Jul. 21, 1891	J.H. Hamilton, A. Rollason	Gas or Vapor Engine	gas and gasoline engines
456,853	Jul. 28, 1891	J.H. Hamilton, A. Rollason	Gas or Vapor Engine	gas and gasoline engines

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