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| All Patents in class 91/41 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,128,795 | Feb. 16, 1915 | W.H. Lieber | Trimmer-saw | circular crosscut saws | |
| 1,267,130 | May 21, 1918 | W.B. Burrows, I.L. Skeith | Power Lifting Mechanism for Saw Trimmers | circular saw accessories | |
| 1,909,767 | May 16, 1933 | W.M. Fairbairn, A.M. Johnson | Machine tool | tapping machines | |
| 2,454,591 | Nov. 23, 1948 | J.L. King, S.G. Brady | Indexing Mechanism | indexers and dividers | |
| 3,075,503 | Jan. 29, 1963 | W.A. Kimsey | Hydraulic screw feed mechanism | boring and turning machines | |