| All Patents in class 451/244 |
Patents 61 -
74
of 74
      |
| Number | Date | Patentee | Title | Type |
| 2,635,395 | Apr. 21, 1953 | P.A. Grobey, M.H. Arms | Machine for grinding internal surfaces concentric with external surfaces | grinders |
| 2,793,479 | May 28, 1957 | P.C. Durland, M.H. Arms | Internal grinding machine | grinders |
| 2,795,088 | Jun. 11, 1957 | R. Bernhard, C.J. Schonhoft | Microcentric Grinder | cylindrical grinders |
| 2,838,885 | Jun. 17, 1958 | R. Cann | Compensating radial work support for an internal centerless grinder | grinders |
| 2,838,888 | Jun. 17, 1958 | R. Cann, J.W. Lovely | Compensating radial work support for an internal centerless grinder | grinders |
| 2,897,636 | Aug. 04, 1959 | R.S. Pyne, A.H. Tompkins | Work rest for a centerless grinder | centerless grinders |
| 2,911,763 | Nov. 10, 1959 | H.P. Kwapien, A.W. Todd | Work feeding mechanism for a centerless grinder | centerless grinders |
| 2,914,890 | Dec. 01, 1959 | W.A. Hoier | Work Handling and Indexing Mechanism | centerless grinders |
| 2,969,623 | Jan. 31, 1961 | K.D. Mehlhope, A.H. Faulhaber | Size Gauging Device | centerless grinders |
| 2,976,650 | Mar. 28, 1961 | B.H. Steinhard | Machine Tool Workpiece Loading System | centerless grinders |
| 3,071,898 | Jan. 08, 1963 | G.L. Grove | Centerless Grinder Infeed Workrest and Ejector Mechanism | metalworking machine mechanisms |
| 3,075,321 | Jan. 29, 1963 | W.B. Seidel | Workpiece Handling Mechanism for Centerless Grinder | centerless grinders |
| 3,115,729 | Dec. 31, 1963 | E.F. Render | Centerless Grinding Machine | centerless grinders |
| 3,154,891 | Nov. 03, 1964 | R.H. Weisgerber | Apparatus for Grinding Flexible Cord | manufacturing processes |
