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| All Patents in class 200/61.46 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 2,333,982 | Nov. 09, 1943 | R.F. Brown | Electrical Contactor Device | ||
| 2,511,956 | Jun. 20, 1950 | T.A. Wetzel | Tracer Controlled Machine Tool | ||
| 2,816,187 | Dec. 10, 1957 | A.E. Smith | Indicating Device | ||
| 2,859,295 | Nov. 04, 1958 | M. Weidig | Zero Speed Mechanism | ||