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| All Patents in class 72/336 | |||||
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| Number | Date | Patentee | Title | Type | |
| 51,421 | Dec. 12, 1865 | M. Bray | Improvement in machinery for forming sheet-metal ware | punch presses | |
| 78,105 | May 19, 1868 | N.C. Lombard, M. Bray | Improved machine for forming sheet-metal ware | stamping presses | |
| 859,977 | Jul. 16, 1907 | J.J. Rigby | Double-action press | stamping presses | |
| 2,737,215 | Mar. 06, 1956 | C.O. Larson | Clamp and method of making the Same | hand screws | |