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| All Patents in class 324/154R | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 392,476 | Nov. 06, 1888 | E. Weston | Reflecting-galvanometer | |
 | 427,022 | Apr. 29, 1890 | E. Weston | Electrical Measuring Instrument | |
 | 1,478,118 | Dec. 18, 1923 | E.J. Henderson | Nailing machine | |
| 3,010,426 | Nov. 28, 1961 | J.B. Rolfe | Scale Pointer Index | ||
| 3,239,759 | Mar. 08, 1966 | R.R. O'Hara | Automatic Rebalancing Measuring System Having Auxiliary Actuated Indicator Zero Return Means | ||