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All Patents in class 60/521
Patents 1 - 6 of 6
First set of recordsLast set of records
PictureNumberDatePatenteeTitle
  91,239Jun. 15, 1869W. LehmannHot Air Engine
  324,061Aug. 11, 1885E.F. Woodbury, G. Patten, J. Merrill, J.A. WoodburyHot Air Engine
  331,361Dec. 01, 1885E.F. Woodbury, G. Patten, J. Merrill, J.A. WoodburyAir Engine
  336,093Feb. 16, 1886L.A. DaelenCaloric-Engine
  345,450Jul. 13, 1886A.K. RiderAir Engine
  445,904Feb. 03, 1891H. RobinsonHot Air Engine
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