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All Patents in class 122/44.1
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
6,387XFeb. 18, 1831L. DisbrowCompound furnace steam boilerstationary boilers
6,387Apr. 24, 1849J. Burdge, W.F. ConverseMachinery for Cutting Screws on Rails for Bedsteadswood threading machines
616,380Dec. 20, 1898C.G. WernickeBoilertraction engine boilers
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