| All Patents in class 451/331 |
Patents 31 -
36
of 36
      |
| Number | Date | Patentee | Title | Type |
| 3,075,321 | Jan. 29, 1963 | W.B. Seidel | Workpiece Handling Mechanism for Centerless Grinder | centerless grinders |
| 3,188,890 | Jun. 15, 1965 | R.F. Fischer, G.W. Ross, J.R. Finley, A.H. Fotsch | Car Wheel Borer with Transfer Mechanism | metalworking machine mechanisms |
| 3,226,886 | Jan. 04, 1966 | W.B. Seidel | Machine Tool Loading Mechanism | grinding machines |
| 3,239,969 | Mar. 15, 1966 | O.R. Perry | Single Arm Double Workpiece Loader for Machine Tool | workpiece changers and storage mechanisms |
| 3,247,980 | Apr. 26, 1966 | G. Mickas | Means for Transporting Workpieces To and From a Work Station | workpiece changers and storage mechanisms |
| 5,367,836 | Nov. 29, 1994 | K.H. Allen | Automatic Drill Loader | tool changers and storage mechanisms |
