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| All Patents in class 33/722 | |||||
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| Number | Date | Patentee | Title | Type | |
| 206,259 | Jul. 23, 1878 | E.S. Prime | Improvement in Wantage Rods | ||
| 812,411 | Feb. 13, 1906 | G.P. Doern | Gage Reading Device | gauges | |