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| All Patents in class 76/27 | |||||
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| Number | Date | Patentee | Title | Type | |
| 119,813 | Oct. 10, 1871 | B.S. Bishop | Improvement in machines for curving saw-blades | tool making machines | |
| 259,068 | Jun. 06, 1882 | T.S. Wilkin | Machine for stretching saws | reciprocating sawmills | |
| 338,434 | Mar. 23, 1886 | L.O. Orton | Machine for rolling saws | making sawblades | |
| 1,038,127 | Sep. 10, 1912 | J.P. Hedstrom | Stretcher-rolls | saw sharpening machines | |