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Patents for William H. Laughlin | |||||
Number | Date | Patentee | Title | Type | |
129,737 | Jul. 23, 1872 | W.H. Laughlin | Improvement in Carpenters' Bevels | bevels | |
178,448 | Jun. 06, 1876 | W.H. Laughlin | Improvement in Countersinks | countersinks |