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| All Patents in class 12/31.5 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,721,902 | Jul. 23, 1929 | A.F. Froussard | Clutch Mechanism for Presses | metalworking presses | |
| 1,846,029 | Feb. 23, 1932 | A.F. Froussard | Shoe Heal Machine | shoe and boot making machines | |
| 1,898,044 | Feb. 21, 1933 | A.F. Froussard | Shoe Heal Machine | shoe and boot making machines | |
| 1,994,510 | Mar. 19, 1935 | A.F. Froussard | Shoe Sole Machine | shoe and boot making machines | |