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All Patents in class 418/270
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
9,539XMar. 23, 1836D. UlamRotary steam enginerotary steam engines
145,304Dec. 09, 1873W.F. MoodyImprovement in rotary steam-enginessteam engines
3,934,657Jan. 27, 1976I.R. DanielsonDual safety control means for a power tool
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