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| Patents for Dennis W. Quill | |||||
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| Number | Date | Patentee | Title | Type | |
| 628,853 | Jul. 11, 1899 | J.B. Robichan | Steel Square | carpenter squares | |
| 752,752 | Feb. 23, 1904 | J. Boulet | Micrometer Indicator | test indicators | |