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| Patents for Wm. C. Richardson | |||||
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| Number | Date | Patentee | Title | Type | |
| 65,946 | Jun. 18, 1867 | C. Richardson | Improved Apparatus for Tempering Steel Plates | tool making machines | |
| 65,947 | Jun. 18, 1867 | C. Richardson | Improvement in Hand Saw Frames | hacksaws | |