| All Patents in class 451/120 |
Patents 1 -
8
of 8
      |
| Picture | Number | Date | Patentee | Title |
 | 399,344 | Mar. 12, 1889 | J.M. Petersen | Machine for fitting the ends of band-saws |
| | 404,686 | Jun. 04, 1889 | R. Conrader | Grinding Machine |
 | 431,139 | Jul. 01, 1890 | W. Curtiss | Machine for dressing the teeth of gear-wheels |
| | 1,113,650 | Oct. 13, 1914 | W.A. Kelsey | Tool Holder |
 | RE14,392 | Nov. 13, 1917 | J.O. Berg | Tool for treating stone, concrete and other material |
| | 2,424,347 | Jul. 22, 1947 | J.C. Wilson | Machine Tool for Cutting Surfaces of Irregular Shape |
 | 2,741,070 | Apr. 10, 1956 | A.A. Muehling | Swing grinder |
 | 2,750,714 | Jun. 19, 1956 | A.A. Muehling | Swing grinder |
