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| Patents for E. P. Barrus | |||||
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| Number | Date | Patentee | Title | Type | |
| 680,815 | Aug. 20, 1901 | L.S. Starrett | Square | squares | |
| 713,021 | Nov. 04, 1902 | L.S. Starrett | Prick Punch and Spacing Tool | punches | |