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Patents for Duro Metal Products Co.
Patents 16 - 30 of 87
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1,877,348Sep. 13, 1932N.F. McNaught, E.H. PetersonValve grinder
1,902,878Mar. 28, 1933N.F. McNaught, E.H. PetersonRatchet wrenchratchet wrenches
1,903,058Mar. 28, 1933N.F. McNaught, E.H. PetersonMeans and method for applying brake shoe linings
1,921,225Aug. 08, 1933W.L. HawkinsSpare wheel lock
1,932,796Oct. 31, 1933N.F. McNaughtGrease ram
1,950,493Mar. 13, 1934C.L. JohnsonSpare wheel and tire lock
1,952,087Mar. 27, 1934N.F. McNaught, E.H. PetersonValve guide and unseater
1,968,215Jul. 31, 1934N.F. McNaught, E.H. PetersonTool for cleaning commutators and the like
RE19,341Oct. 16, 1934E.H. Peterson, N.F. McNaughtRatchet Wrench and Method of Making the Sameratchet wrenches
1,978,590Oct. 30, 1934N.F. McNaught, E.H. PetersonWrench joint
D95,825Jun. 04, 1935T.L. HedgpethDesign for a sanding machinehandheld sanders
D97,643Nov. 26, 1935T.L. HedgpethTable jointerjointers
2,027,922Jan. 14, 1936N.F. McNaughtMethod of making wrench sockets
2,044,982Jun. 23, 1936T.L. HedgpethSanding machinesanding machines
2,044,983Jun. 23, 1936T.L. HedgpethBelt and pulley measuring apparatus
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