| All Patents in class 409/903 |
Patents 31 -
37
of 37
      |
| Number | Date | Patentee | Title | Type |
| 2,142,034 | Dec. 27, 1938 | R.H. Patrick | Work Holder Mechanism for Machine Tools and the Like | workpiece changers and storage mechanisms |
| 2,217,048 | Oct. 08, 1940 | C.W. Floss | Magnetic work holder | magnetic chucks |
| 2,323,770 | Jul. 06, 1943 | M.W. Hazelton | Hold-down means for shears and the like | metal shearing machines |
| 2,354,937 | Aug. 01, 1944 | C.W. Barker | Work-holding device having a ball and socket as a means for universal adjustment | bench vises |
| 2,699,708 | Jan. 18, 1955 | A.H. Fotsch | Work Holder | milling machines |
| 2,752,538 | Jun. 26, 1956 | A. Anderson | Magnetic work support | |
| 4,201,376 | May 06, 1980 | K.V. Phillips | Adjustable Clamp for V-Block | V block clamps |
