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| Patents for Alfred H. Hildreth | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 667,080 | Jan. 29, 1901 | B. Gallagher | Drilling-machine | |
 | 686,891 | Nov. 19, 1901 | W.A. Dunbar | Center Square | |
 | 692,844 | Feb. 11, 1902 | B. Gallagher | Last-trimming machine | |
 | 717,670 | Jan. 06, 1903 | B. Gallagher | Machine for washing bottles or similar articles | |
 | 734,838 | Jul. 28, 1903 | J. Edgar | Change-feed mechanism | |