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