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| Patents for Watson Hurlburt | |||||
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| Number | Date | Patentee | Title | Type | |
| 700,865 | May 27, 1902 | J. Armstrong, S. Welter | Cutting Tool | ||
| 707,472 | Aug. 19, 1902 | J. Armstrong, S. Welter | Tool Holder | metal planer tool holders | |