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| All Patents in class 16/DIG.039 | |||||
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| Number | Date | Patentee | Title | Type | |
| 153,534 | Jul. 28, 1874 | J.C. Butterfield | Improvement in trip-hammers | drop hammers | |
| 842,756 | Jan. 29, 1907 | C.W. Blood | Belt-adjusting mechanism | industrial machine pulleys and belt drive mechanisms | |
| 1,227,292 | May 22, 1917 | C.B. Mills | Bed-plate | motor bases | |
| 1,908,080 | May 09, 1933 | J.P. Thompson | Screw | ||