| All Patents in class 451/339 |
Patents 1 -
15
of 16
      |
| Number | Date | Patentee | Title | Type |
| 926,761 | Jul. 06, 1909 | J.G. Oliver | Lathe Chuck | metal lathe chucks |
| 1,575,558 | Mar. 02, 1926 | W.D. Archea, L.F. Nenninger, S. Einstein | Centreless Grinding Machine | centerless grinders |
| 1,688,103 | Oct. 16, 1928 | W.D. Archea | Work Rest and Ejecting Device for Grinding Machines | grinding machines |
| 1,790,848 | Feb. 03, 1931 | A. Schinkez, E.R. Smith | Automatic Lathe and Blank Feeding Means Therefor | metal lathes |
| 1,842,375 | Jan. 26, 1932 | S. Einstein | Grinding Machinery | grinding machines |
| 1,850,373 | Mar. 22, 1932 | C. Booth | Grinding Machine | grinding machines |
| 1,864,129 | Jun. 21, 1932 | H. Fritschi | Machine Tool Structure | grinding machines |
| 1,864,578 | Jun. 28, 1932 | G.W. Binns | Grinding Machine | grinding machines |
| 1,896,481 | Feb. 07, 1933 | R.A. Cole | Centerless Grinding Machine | grinding machines |
| 1,919,143 | Jul. 18, 1933 | G.W. Binns | Grinding Machine | grinding machines |
| 1,928,353 | Sep. 26, 1933 | L.D. Goodspeed | Automatic variety lathe | wood lathes |
| 1,938,764 | Dec. 12, 1933 | H. Fritschi, F.S. Haas | Grinding Machine | grinding machines |
| 2,911,763 | Nov. 10, 1959 | H.P. Kwapien, A.W. Todd | Work feeding mechanism for a centerless grinder | centerless grinders |
| 2,990,656 | Jul. 04, 1961 | A.H. Tompkins | Automatically operable centerless grinder | centerless grinders |
| 3,220,145 | Nov. 30, 1965 | P.E. Soden | Workpiece Ejector for Centerless Grinding Machine | centerless grinders |
