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| Patents for Alfred H. Hildreth | |||||
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| Number | Date | Patentee | Title | Type | |
| 667,080 | Jan. 29, 1901 | B. Gallagher | Drilling-machine | drilling and boring | |
| 686,891 | Nov. 19, 1901 | W.A. Dunbar | Center Square | center marking gauges | |
| 692,844 | Feb. 11, 1902 | B. Gallagher | Last-trimming machine | shoe and boot making machines | |
| 717,670 | Jan. 06, 1903 | B. Gallagher | Machine for washing bottles or similar articles | ||
| 734,838 | Jul. 28, 1903 | J. Edgar | Change-feed mechanism | metalworking speed changing mechanisms | |