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| Patents for Multiple Boring Machine Co. | |||||
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| Picture | Number | Date | Patentee | Title | |
| 1,516,815 | Nov. 25, 1924 | A.F. Froussard | Boring Machine | ||
 | 1,576,593 | Mar. 16, 1926 | A.F. Froussard | Cylinder hone | |
| 1,583,786 | May 11, 1926 | A.F. Froussard | Cylinder Boring Machine | ||
| 2,638,802 | May 19, 1953 | A.F. Froussard | Boring Implement | ||