| All Patents in class 29/215 |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 201,591 | Mar. 26, 1878 | O. Breckenridge | Improvement in Pipe and Rod Vises | lever lock vises |
| 1,008,694 | Nov. 14, 1911 | G.W. Bryant | Spring Contracting and Removing Device | valve spring tools |
| 1,253,270 | Jan. 15, 1918 | J.H. Blackman, H. Moody | Valve Lifter | valve spring tools |
| 1,603,818 | Oct. 19, 1926 | N. Sulentic | Spring Receiving and Manipulating Clip | |
| 1,607,667 | Nov. 23, 1926 | E.E. Essen | Valve Spring Compressor | valve spring tools |
| 1,858,372 | May 17, 1932 | N.F. McNaught, E.H. Peterson | Valve spring compressor | |
| 1,862,792 | Jun. 14, 1932 | M.C. Dellinger, H.W. Kulp | Valve Spring Lifter | valve spring tools |
