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| Patents for E. Warren | |||||
| Number | Date | Patentee | Title | Type | |
| 40,522 | Nov. 03, 1863 | E. Warren | Blacksmith's Clinchers | farrier | |
| 42,918 | May 24, 1864 | W. Johnston, E. Warren | Farriers' Tool | farrier | |
| D44,126 | Jun. 03, 1913 | E. Harrold | Design for a guard for band-saws | bandsaws | |