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| Patents for Ernest Sperisen | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,643,554 | Jun. 30, 1953 | E. Sperisen | Boring Bar Pilot Support | metalworking machine tool holders | |
| 2,653,062 | Sep. 22, 1953 | E. Sperisen | Bearing | metalworking machine bearings | |