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| All Patents in class 403/337 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 1,908,592 | May 09, 1933 | H.L. Flather | Work Rotating Structure for Machine Tools | ||
 | 4,819,555 | Apr. 11, 1989 | R. Ballantyne, L. Malashenko | Hydraulic press with adjustable platen spacing | |