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All Patents in class 137/906
Patents 1 - 6 of 6
First set of recordsLast set of records
PictureNumberDatePatenteeTitle
14,424Mar. 11, 1856E. TracyWrench
94,668Sep. 07, 1869H. ThompsonImprovement in sawing-machine
  229,881Jul. 13, 1880H.F. GaskillPump Valve
  276,805May 01, 1883W.H. GuildPump Valve
292,396Jan. 22, 1884C. AhrensPump-valve
  1,346,921Jul. 20, 1920E. TerryAutomatic Valve
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