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| Patents for John Royle Jr. | |||||
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| Number | Date | Patentee | Title | Type | |
| 193,555 | Jul. 24, 1877 | V. Royle, J. Royle, Jr. | Improvement in routing-machines for engravers' use | engraver | |
| 304,864 | Sep. 09, 1884 | V. Royle, J. Royle, Jr. | Machine for repeating pattern-cards | ||
| 374,707 | Dec. 13, 1887 | V. Royle, J. Royle, Jr. | Routing-machine | routing machines | |
| 442,826 | Dec. 16, 1890 | V. Royle, J. Royle, Jr. | Routing-machine | routing machines | |
| 639,617 | Dec. 19, 1899 | V. Royle | Shoot-plane | shooting board planes | |