| All Patents in class 470/147 |
Patents 1 -
9
of 9
      |
| Number | Date | Patentee | Title | Type |
| 68,555 | Sep. 03, 1867 | O.C. Burdict | Improved machine for heading bolts | nut or bolt making machines |
| 88,981 | Apr. 13, 1869 | T.T. Prosser | Improvement in machines for heading bolts | |
| 97,351 | Nov. 30, 1869 | O.C. Burdict | Improved bolt-heading machine | nut or bolt making machines |
| 100,928 | Mar. 15, 1870 | J. Root | Improved machine for heading bolts | nut or bolt making machines |
| 123,822 | Feb. 20, 1872 | J. Greenwood | Improvement in machines for forging the heads of bolts | forging apparatus and accessories |
| 146,374 | Jan. 13, 1874 | J.R. Abbe | Bolt-Heading Machine | bolt heading machines |
| 168,135 | Sep. 28, 1875 | O.C. Burdict | Machine For Forging Wrench-Bar Heads | wrench jaw components |
| 334,464 | Jan. 19, 1886 | F. Philips | Bolt Heading Machine | nut or bolt making machines |
| 334,465 | Jan. 19, 1886 | F. Philips | Bolt Heading Machine | nut or bolt making machines |
