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| Patents for William L. Tancred | |||||
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| Picture | Number | Date | Patentee | Title | |
| 2,456,158 | Dec. 14, 1948 | W.L. Tancred | Tracer and Automatic Pattern Feed | ||
| 2,491,398 | Dec. 13, 1949 | W.L. Tancred | Contouring Machine | ||
| 2,562,284 | Jul. 31, 1951 | W.L. Tancred | Tracer Mechanism | ||
| 2,575,984 | Nov. 20, 1951 | W.L. Tancred | Grinding Wheel Truing Mechanism | ||
| 2,602,437 | Jul. 08, 1952 | W.L. Tancred | Hydraulic Profiler for Truing Devices and the Like | ||