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| Patents for John Frey | |||||
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| Number | Date | Patentee | Title | Type | |
| 81,356 | Aug. 25, 1868 | J.M. Eichholtz, J. Frey | Portable reciprocating saw | reciprocating saws | |
| RE6,586 | Aug. 10, 1875 | J. Frey, J.M. Eichholtz | Improvement in sawing-machines | handheld power jigsaws | |