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Patents for Laird & Sweeney Mfg. Co.
Patents 1 - 2 of 2
First set of recordsLast set of records
NumberDatePatenteeTitleType
477,159Jun. 14, 1892R.B. Laird, J.B. SweeneyPower Hammerforging machines
529,634Nov. 20, 1894R.W. Laird, J.B. SweeneyPower Hammerpower hammers
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