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| Patents for A. L. Humphrey | |||||
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| Number | Date | Patentee | Title | Type | |
| 996,901 | Jul. 04, 1911 | J.E. Ball | Taper Gage | measurement gauges | |
| 1,056,186 | Mar. 18, 1913 | F. Laplant | Dial Test Indicator | test indicators | |