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Patents Granted on 1921-09-20
Patents 1 - 6 of 6
First set of recordsLast set of records
1,391,016Sep. 20, 1921H.R. Slider, W.T. SliderMicrometermicrometers
1,391,177Sep. 20, 1921G.H. Du SellChuck
1,391,179Sep. 20, 1921G.E. Hemphill, E.J. EvansMonkey Wrenchquick adjust wrenches
1,391,180Sep. 20, 1921G.E. Hemphill, E.J. EvansWrenchquick adjust wrenches
1,391,619Sep. 20, 1921L.A. EdwinsonRatchet Wrenchratchet wrenches
1,391,621Sep. 20, 1921F.H. FenwirthExtension Rule
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