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| All Patents in class 116/332 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 2,228,497 | Jan. 14, 1941 | E.J. Witchger | Indicating device for measuring instruments | |
| 3,010,426 | Nov. 28, 1961 | J.B. Rolfe | Scale Pointer Index | ||