| All Patents in class 74/520 |
Patents 1 -
8
of 8
      |
| Number | Date | Patentee | Title | Type |
| 364,208 | Jun. 07, 1887 | J.R. Blakeslea | Bolt Heading Machine | bolt heading machines |
| 536,819 | Apr. 02, 1895 | J.L. Peck | Drop Hammer | drop hammers |
| 681,160 | Aug. 20, 1901 | H.G. Weibezahl | Pliers or Kindred Tool | pliers |
| 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 | locking pliers |
| 2,460,468 | Feb. 01, 1949 | W.S. Renier | Molding Machine for Plastics and Other Moldable Materials | plastic molding machines |
| 2,617,312 | Nov. 11, 1952 | B.O. Prentice | Mechanical Movement | locking pliers |
| 3,181,408 | May 04, 1965 | J.A. Richards, Sr. | Reciprocating tool actuated by toggle joint means | tool and die maker |
