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Patents for Douglas Dyrenforth
Patents 1 - 3 of 3
First set of recordsLast set of records
NumberDatePatenteeTitleType
245,634Aug. 16, 1881T.J. Jenne, C.S. HarmonLifting-jacklifting jacks
313,924Mar. 17, 1885T.E. DanielsChain mortising-machinemortising machines
381,870Apr. 24, 1888A. WorthingtonBoilerstationary boilers
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