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| All Patents in class 92/28 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 2,403,427 | Jul. 02, 1946 | O.H. Ludeman | Valve Mechanism | ||
| 2,636,579 | Apr. 28, 1953 | M. De Haas | Tailstock Spindle Clamping Device | ||
| 3,003,472 | Oct. 10, 1961 | D.C. Miller, R.M. Ferris | Quill Actuating and Clamping Mechanism | ||
 | 3,075,503 | Jan. 29, 1963 | W.A. Kimsey | Hydraulic screw feed mechanism | |
| 3,150,569 | Sep. 29, 1964 | L.A. Attermeyer | Piston Mechanism | ||
| 3,176,590 | Apr. 06, 1965 | A.H. Dall, H.R. Uhtenwoldt | Clamping Device | ||