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| Patents for Electro-Magnetic Tool Co. | |||||
| Number | Date | Patentee | Title | Type | |
| 1,598,090 | Aug. 31, 1926 | J. Larocca | Impacting tool | impact chisels and drills | |
| 1,598,091 | Aug. 31, 1926 | J. Larocca | Impacting tool | impact chisels and drills | |
| DE-467,720 | Oct. 30, 1928 | . | Impact tool | ||