| All Patents in class 29/218 |
Patents 1 -
15
of 21
      |
| Number | Date | Patentee | Title | Type |
| 462,421 | Nov. 03, 1891 | S.J. Wever | Wrench | quick adjust wrenches |
| 896,336 | Aug. 18, 1908 | B.A. Swenson | Valve Remover | valve spring tools |
| 1,035,974 | Aug. 20, 1912 | E.N. Kraemer | Valve Spring Releaser and Retainer | valve spring tools |
| 1,051,633 | Jan. 28, 1913 | C. Price | Automobile Valve Lifter | valve spring tools |
| 1,147,804 | Jul. 27, 1915 | E.N. Kraemer | Valve Spring Remover | valve spring tools |
| 1,159,626 | Nov. 09, 1915 | F.J. Vlchek | Valve Spring Lifter | valve spring tools |
| 1,177,268 | Mar. 28, 1916 | F.H. Pierce | Valve Tool For Removing the Valves From Automobiles | valve spring tools |
| 1,191,240 | Jul. 18, 1916 | B.R. Simmons | Valve Spring Holder | valve spring tools |
| 1,198,281 | Sep. 12, 1916 | G.H. Ryan | Valve Remover For Internal Combustion Engines | valve spring tools |
| 1,200,179 | Oct. 03, 1916 | J. Enderlin, Jr. | Tool For Detaching Puppet Valves For Grinding, Cleaning or Other Purposes | valve spring tools |
| 1,220,547 | Mar. 27, 1917 | A. Placek | Valve Spring Lifter | valve spring tools |
| 1,235,237 | Jul. 31, 1917 | W.J. Parsons | Spring Manipulating Tool | valve spring tools |
| 1,253,270 | Jan. 15, 1918 | H. Moody, J.H. Blackman | Valve Lifter | valve spring tools |
| 1,278,400 | Sep. 10, 1918 | J.A. Vansickler | Tool For Removing Tappet Valves | valve spring tools |
| 1,301,733 | Apr. 22, 1919 | C.W. Palmer | Valve Spring Lifter | valve spring tools |
