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| All Patents in class 29/214 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,212,003 | Jan. 09, 1917 | C.L. Bean | Valve Assembly Remover | valve seat pullers | |
| 1,314,355 | Aug. 26, 1919 | C.H. Newton | Valve Remover | valve spring tools | |
| 1,902,711 | Mar. 21, 1933 | M.C. Dellinger, H.W. Kulp | Bushing Remover | vehicle mechanic | |
| 2,089,902 | Aug. 10, 1937 | H.W. Kulp | Valve Guide Driver | valve spring tools | |
| 2,167,897 | Aug. 01, 1939 | H.W. Kulp | Valve Unit or Valve Guide Puller | valve guide pullers | |