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Patents for John R. Averill
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
3,879XMay 27, 1824J.R. AverillCast iron steam boilerstationary boilers
4,002XDec. 29, 1824J.R. AverillCylindrical stave dresser and cross cutting jointercooper
4,260XNov. 12, 1825F. Hoard, J.R. AverillRotary steam enginerotary steam engines
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