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| All Patents in class 33/501.02 | |||||
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| Number | Date | Patentee | Title | Type | |
| 208,654 | Oct. 01, 1878 | D. Frank, G. Waldman | Improvement in Combined Knife and Measuring Rule | rules | |
| 521,976 | Jun. 26, 1894 | O.W. Am Ende | Thickness Gage for Paper making Machines | thickness gages | |
| 3,037,332 | Jun. 05, 1962 | G.S. Butterworth, J.G. Wiatt | Machine Tool Sizing Device | electronic gauges | |