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Patents for Duro Metal Products Co.
Patents 16 - 30 of 92
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NumberDatePatenteeTitleType
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 liningsbrake maintenance
1,921,225Aug. 08, 1933W.L. HawkinsSpare wheel locklocks
1,932,796Oct. 31, 1933N.F. McNaughtGrease ram
1,950,493Mar. 13, 1934C.L. JohnsonSpare wheel and tire locklocks
1,952,087Mar. 27, 1934E.H. Peterson, N.F. McNaughtValve 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 power sanders
D97,643Nov. 26, 1935T.L. HedgpethDesign for a table 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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