| All Patents in class 451/1 |
Patents 46 -
55
of 55
      |
| Number | Date | Patentee | Title | Type |
| 3,108,407 | Oct. 29, 1963 | D.C. Hughes | Centerless Grinder | centerless grinders |
| 3,141,267 | Jul. 21, 1964 | A.H. Dall, J. Decker, H.E. Luebkemann | Precision Grinding Machine | cylindrical grinders |
| 3,187,468 | Jun. 08, 1965 | R. Grzymek | Roll Grinding Machine | roll grinding machines |
| 3,280,512 | Oct. 25, 1966 | W.B. Seidel | Grinding Machine Feed Mechanism | cylindrical grinders |
| 3,290,833 | Dec. 13, 1966 | J.R. Baker | Positional Adjusting Mechanism | roll grinding machines |
| 3,309,821 | Mar. 21, 1967 | R. Grzymek, P.J. Gruber | Automatic Work Loading Mechanism for Machine Tools | workpiece changers and storage mechanisms |
| 3,403,478 | Oct. 01, 1968 | M.R. Estabrook | Automatic feed control for abrading machine | |
| 3,410,028 | Nov. 12, 1968 | M.R. Estabrook | Control of automatic abrading machines | |
| 3,660,944 | May 09, 1972 | E. Warburton, B.R. Bottomley, J.N. Tittle | Grinding Machines | grinding machines |
| 3,665,650 | May 30, 1972 | W.C. Przygocki | Abrasive belt control apparatus and method | sanding machines |
