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| Patents for William Crossman | |||||
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| Number | Date | Patentee | Title | Type | |
| 629,989 | Aug. 01, 1899 | W.L. Field, C.A. Lawton | Head-cutting machine | barrel making machines | |
| 630,040 | Aug. 01, 1899 | W.L. Field | Cutter-head | cutterheads | |