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| Patents for William H. Hart | |||||
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| Number | Date | Patentee | Title | Type | |
| 48,555 | Jul. 04, 1865 | W.H. Hart | Improvement in door-bolts | door and window hardware | |
| 63,645 | Apr. 09, 1867 | A.B. Marshall | Improvement in carpenter's benches | workbenches | |