| All Patents in class 451/403 |
Patents 16 -
27
of 27
      |
| Number | Date | Patentee | Title | Type |
| 2,396,450 | Mar. 12, 1946 | C.E. Walling | V Block Fixture | V blocks |
| 2,442,635 | Jun. 01, 1948 | R.D. Bennett | Spline or gear grinder | gear making machines |
| 2,454,591 | Nov. 23, 1948 | J.L. King, S.G. Brady | Indexing Mechanism | indexers and dividers |
| 2,506,495 | May 02, 1950 | L. Davis, R.E. Flanders | Indexing Mechanism | thread grinders |
| 2,622,375 | Dec. 23, 1952 | W. Trible, F.S. Haas | Grinding Machine | surface grinders |
| 2,712,274 | Jul. 05, 1955 | C.M. Hajewski | Two Spindle Milling Machine | milling machines |
| 2,768,478 | Oct. 30, 1956 | C.E. Waller | Pattern Controlled Cutter Grinder | tool grinders |
| 3,816,998 | Jun. 18, 1974 | H.W. Grivna, D.C. Elm | Method of and apparatus for rapidly abrading metal workpieces | metal sanding machines |
| 4,133,423 | Jan. 09, 1979 | F. Zankl | Shuttle System for Machine Tool | metalworking machine mechanisms |
| 4,211,512 | Jul. 08, 1980 | F. Zankl | Rotary Table With Ballscrew Drive | rotary tables |
| 6,010,394 | Jan. 04, 2000 | J.H. Dieck, R.K. Rosenquist | Automatic mower reel grinder | |
| 6,290,581 | Sep. 18, 2001 | R.K. Rosenquist, J.H. Dieck | Automatic mower reel grinder | |
