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| All Patents in class 359/513 | |||||
| Number | Date | Patentee | Title | Type | |
| 690,019 | Dec. 31, 1901 | H.L. De Zeng, Jr. | Telescope | firearms | |
| 701,520 | Jun. 03, 1902 | H.D. Gibbs, F.L. Smith | Telescope | telescopes | |