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| Patents for D. H. Murphy | |||||
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| Number | Date | Patentee | Title | Type | |
| 155,148 | Sep. 22, 1874 | B. Forstner | Forstner Bit | drill bits | |
| 298,029 | May 06, 1884 | N. Sawyer | Tap Wrench | tap wrenches and die stocks | |
| 300,901 | Jun. 24, 1884 | N. Sawyer | Die Stock and Die | tap wrenches and die stocks | |