| All Patents in class 451/394 |
Patents 16 -
29
of 29
      |
| Number | Date | Patentee | Title | Type |
| 2,020,547 | Nov. 12, 1935 | F.S. Haas | Grinding Machine | grinding machines |
| 2,069,493 | Feb. 02, 1937 | W.H. Howe | Carriage Traversing Mechanism | machine tool controls |
| 2,136,491 | Nov. 15, 1938 | E.S. Cornell | Metalworking Machine | surface grinders |
| 2,164,067 | Jun. 27, 1939 | W.M. Fairbairn, A.M. Johnson | Machine for dressing external cylindrical surfaces | |
| 2,285,377 | Jun. 02, 1942 | J.C. Inman | Surfacing machine | gasket surface maintenance |
| 2,309,669 | Feb. 02, 1943 | J.E. Poorman | Grinding Machine | surface grinders |
| 2,704,917 | Mar. 29, 1955 | P.V. Miller | Spindle Indicator | grinding attachments |
| 2,752,740 | Jul. 03, 1956 | G.H. Mouw | Form relieving fixture | sharpening tools and fixtures |
| 2,840,958 | Jul. 01, 1958 | C.E. Waller | Automatic Cutter Grinder | tool grinders |
| 2,875,560 | Mar. 03, 1959 | J. Rocco | Tool Holder | sharpening tool holders |
| 2,958,167 | Nov. 01, 1960 | A.E. Mueller | Grinder Fixture | grinding attachments |
| 3,349,521 | Oct. 31, 1967 | A.J. Bryant | Device for Holding Rotary Cutting Tools | tap and die holders |
| 3,367,069 | Feb. 06, 1968 | G. Mickas | Form Wheel Gear Grinder | gear grinding machines |
| 3,479,775 | Nov. 25, 1969 | J.K. Smith | Work Handling Fixture | grinding attachments |
