| All Patents in class 432/231 |
Patents 1 -
9
of 9
      |
| Number | Date | Patentee | Title | Type |
| 62,591 | Mar. 05, 1867 | E.C. Atkins | Improvement in machines for tempering saws | tool making machines |
| 65,946 | Jun. 18, 1867 | C. Richardson | Improved Apparatus for Tempering Steel Plates | tool making machines |
| 91,279 | Jun. 15, 1869 | W.B. Smith | Improved portable furnace for shrinking on and removing tires | tire setters |
| 252,605 | Jan. 24, 1882 | J.F. Komp | Machine for Brazing Band Saws | bandsaw brazing and welding machines |
| 343,358 | Jun. 08, 1886 | W.B. Barry | Apparatus for tempering saws | tool making machines |
| 3,960,093 | Jun. 01, 1976 | D.R. Gregory | Portable Forge | portable forges |
| 4,424,025 | Jan. 03, 1984 | D.R. Jones | Gas Forge | forges |
| 4,576,574 | Mar. 18, 1986 | R.E. Schantz | Gas Horseshoe Forge | portable forges |
| 4,875,854 | Oct. 24, 1989 | L.M. Emery | Miniature Forge | portable forges |
