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| All Patents in class 72/399 | |||||
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| Number | Date | Patentee | Title | Type | |
| 859,977 | Jul. 16, 1907 | J.J. Rigby | Double-action press | stamping presses | |
| 1,736,715 | Nov. 19, 1929 | J.J. Marshall | Method of and apparatus for forming hook bars | ||
| 2,541,544 | Feb. 13, 1951 | P.A. Rahaim | Compressing machine having two pivoted dies closed by reciprocating mount for third die | wood compressing machines | |
| 3,396,570 | Aug. 13, 1968 | W.B. McCardell | Non-Generating Tooth Forming Apparatus | gear making machines | |