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| All Patents in class 606/135 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 560,383 | May 19, 1896 | P.J. Weder | Castrating Instrument | |
 | 2,447,474 | Aug. 17, 1948 | A.O. Hammond | Device For Expanding Rubber Rings | |
 | 2,582,640 | Jan. 15, 1952 | C. Maddox | Castrating Band Applying Tool | |