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| Patents for E. P. Holly | |||||
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| Picture | Number | Date | Patentee | Title | |
| RE5,132 | Nov. 05, 1872 | B. Holly | Improvement in Water-Supply Regulators for Water-Works | ||
 | CA-11,233 | May 10, 1880 | B. Holly | Perfectionnements Aux Caloriferes | |