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| Patents for Lawrence Cosgrove | |||||
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| Number | Date | Patentee | Title | Type | |
| 280,582 | Jul. 03, 1883 | L. Cosgrove | Machine for Cutting Key Seats | keyway cutting machines | |
| 282,704 | Aug. 07, 1883 | L. Cosgrove | Universal Milling Machine | milling machines | |