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| All Patents in class 474/136 | |||||
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| Number | Date | Patentee | Title | Type | |
| 278,064 | May 22, 1883 | J. Walrath | Saw-mill | circular sawmills | |
| 448,583 | Mar. 17, 1891 | P. Medart | Belt-tightening mechanism | industrial machine pulleys and belt drive mechanisms | |
| 1,179,999 | Apr. 18, 1916 | J.C. Blevney | Grinding and polishing machine | sanding machines | |