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| All Patents in class 33/669 | |||||
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| Number | Date | Patentee | Title | Type | |
| 98,504 | Jan. 04, 1870 | G. Kenny | Improvement in Gauge and Dividers | marking gauges | |
| 784,903 | Mar. 14, 1905 | F.J. Stemmrich | Combination Gage | surface gauges | |
| 1,127,955 | Feb. 09, 1915 | M. Berthold | Caliper Gauge | measurement gauges | |