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| Patents for Daniel H. Herr | |||||
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| Number | Date | Patentee | Title | Type | |
| 473,582 | Apr. 26, 1892 | H.B. Keiper | Screw-cutting plate | ||
| 596,505 | Jan. 04, 1898 | J.A. Hawthorn | Pipe Wrench | pipe wrenches | |
| 633,096 | Sep. 12, 1899 | H.B. Keiper | Oscillating Bearing | metalworking machine bearings | |
| 667,658 | Feb. 05, 1901 | H.B. Keiper | Ball-gearing | ||