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| Patents for Edgar P. Holly | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 138,650 | May 06, 1873 | E.P. Holly | Fluting Machine | |
 | 473,554 | Apr. 26, 1892 | E.P. Holly | Valve-Packing Device | |
 | 498,793 | Jun. 06, 1893 | E.P. Holly | Cash Register | |
| 587,290 | Jul. 27, 1897 | E.P. Holly | Water Return System for Steam Generators | ||
| 587,291 | Jul. 27, 1897 | E.P. Holly | Water Return System for Steam Generators | ||
 | 900,853 | Oct. 13, 1908 | E.P. Holly | Liquid Impelling Device | |
 | 917,070 | Apr. 06, 1909 | E.P. Holly | Impelling Device | |