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Patents for Amos W. Sangster
Patents 1 - 6 of 6
First set of recordsLast set of records
NumberDatePatenteeTitleType
142,357Sep. 02, 1873A. SmithImprovement in apparatus for burning gas-tar
142,809Sep. 16, 1873J.T. NoyeImprovement in tramming-bolts for grinding-millsgrist mills
166,758Aug. 17, 1875C.M. FarrarRotary Balanced Valvesteam engine valves
172,557Jan. 25, 1876F. CollignonSteam Boilerstationary boilers
245,608Aug. 16, 1881J.J. BurkFeeding-attachment for planing-machineswood planers
292,817Feb. 05, 1884E. Holmes, B. HolmesWindlass for Compressing Barrelsbarrel making machines
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