| All Patents in class 74/520 |
Patents 1 -
9
of 9
      |
| Picture | Number | Date | Patentee | Title |
| | 364,208 | Jun. 07, 1887 | J.R. Blakeslea | Bolt Heading Machine |
| | 536,819 | Apr. 02, 1895 | J.L. Peck | Drop Hammer |
| | 681,160 | Aug. 20, 1901 | H.G. Weibezahl | Pliers or Kindred Tool |
| | 2,371,547 | Mar. 13, 1945 | C.S. Fuzak, V.E. Rosenlund | Pressure exerting mechanism |
| | 2,416,349 | Feb. 25, 1947 | W.S. Renier | Molding Machine for Plastics and Other Moldable Materials |
 | 2,443,153 | Jun. 08, 1948 | G.W. Wells | Toggle Operated Wrench with Toggle Release Lever |
| | 2,460,468 | Feb. 01, 1949 | W.S. Renier | Molding Machine for Plastics and Other Moldable Materials |
 | 2,617,312 | Nov. 11, 1952 | B.O. Prentice | Mechanical Movement |
 | 3,181,408 | May 04, 1965 | J.A. Richards, Sr. | Reciprocating tool actuated by toggle joint means |
