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| Patents for Charles H. Riggs | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 78,132 | May 19, 1868 | C.H. Riggs | Improvement in planer-chucks | |
 | RE3,121 | Sep. 15, 1868 | C.H. Riggs | Planer Chuck | |
 | 90,783 | Jun. 01, 1869 | C.H. Riggs | Improved Auxiliary Jaw for Planer-Chuck | |