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| Patents for William H. Gray | |||||
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| Number | Date | Patentee | Title | Type | |
| 361,506 | Apr. 19, 1887 | W.H. Gray | Presser-bar for wood planing and molding machines | wood planers | |
| 362,619 | May 10, 1887 | W.H. Gray | Chip-breaker for wood-planing-machines | ||
| 377,250 | Jan. 31, 1888 | W.H. Gray | Planer-matcher | wood planers | |