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All Patents in class 29/221
Patents 1 - 15 of 25
First set of recordsNext set of recordsLast set of records
982,539Jan. 24, 1911W.H. ShimpfSpring Holding Device For Valvesvalve spring tools
1,044,517Nov. 19, 1912B.C. HallgrenValve Lifting Devicevalve spring tools
1,045,321Nov. 26, 1912P.F. PillinerValve Spring Compressorvalve spring tools
1,105,096Jul. 28, 1914S.C. NorthTool for Removing Engine Valvesvalve spring tools
1,234,967Jul. 31, 1917C.O. ThropValve Removing Toolvalve spring tools
1,330,542Feb. 10, 1920H.W. KulpValve Spring Liftervalve spring tools
1,333,966Mar. 16, 1920W.B. FayLifting Jackvalve spring tools
1,359,814Nov. 23, 1920M.C. Dellinger, H.W. KulpValve-spring liftervalve spring tools
1,444,729Feb. 06, 1923D.E. CarlsonValve Spring Liftervalve spring tools
1,461,275Jul. 10, 1923M.C. Dellinger, H.W. KulpValve Spring Lifter Lockvalve spring tools
1,553,623Sep. 15, 1925J.H. McLeodParallel Valve Spring Liftervalve spring tools
1,588,504Jun. 15, 1926J. SunnenValve Liftervalve spring tools
1,608,176Nov. 23, 1926J.A. Anderson, W.F. HobbsValve Lifting Toolvalve spring tools
1,614,300Jan. 11, 1927J.A. Anderson, W.F. HobbsValve Lifting Toolvalve spring tools
1,713,761May 21, 1929H.W. Kulp, M.C. DellingerCollapsible Valve Spring Lifter Lockvalve spring tools
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