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| Patents for H. B. Collins | |||||
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| Number | Date | Patentee | Title | Type | |
| 765,034 | Jul. 12, 1904 | C.C. McLaughry | Compression Indicator for Calipers | calipers | |
| 792,480 | Jun. 13, 1905 | J.D. Wages | Combination Tool | ||