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| Patents for Willard Curtiss | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 91,269 | Jun. 15, 1869 | W. Curtiss, C. Richards | Improvement in cutter-head | |
 | 431,139 | Jul. 01, 1890 | W. Curtiss | Machine for dressing the teeth of gear-wheels | |