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| Patents for Justus Roe | |||||
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| Number | Date | Patentee | Title | Type | |
| 387,541 | Aug. 07, 1888 | J. Roe | Reel for tape measures, fishing-lines, & c. | tape measures | |
| 431,484 | Jul. 01, 1890 | J. Roe | Folding Draftsman's Triangle | squares | |
| 475,470 | May 24, 1892 | J. Roe | Tape measure reel | tape measures | |