| All Patents in class 29/275 |
Patents 1 -
10
of 16
      |
| Picture | Number | Date | Patentee | Title |
| | 900,337 | Oct. 06, 1908 | W.B. Wingate | Flue Plugger |
 | 1,435,511 | Nov. 14, 1922 | W.T. Sutherland | Wrist Pin Wrench |
| | 1,824,743 | Sep. 22, 1931 | K.B. Neu | Piston Pin Tool |
| | 1,825,873 | Oct. 06, 1931 | M.C. Dellinger, H.W. Kulp | Wrist Pin Inserting Tool |
| | 1,893,414 | Jan. 03, 1933 | P.H. Clarke, H.P. Johnson | Combination Puller |
 | 1,941,565 | Jan. 02, 1934 | S. Mandl | Socket Wrench |
| | 1,969,725 | Aug. 14, 1934 | F.O. Carlson | Piston Pin Inserter and Remover |
 | 2,089,902 | Aug. 10, 1937 | H.W. Kulp | Valve Guide Driver |
 | 2,176,626 | Oct. 17, 1939 | A.E. Gentry | Bushing Remover |
 | 2,542,368 | Feb. 20, 1951 | N.A. Smith | driftpin |
