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| Patents for Charles H. Shields | |||||
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| Number | Date | Patentee | Title | Type | |
| 977,256 | Nov. 29, 1910 | F.W. Albrecht | Rotary-saw trimmer | tablesaws | |
| 1,023,407 | Apr. 16, 1912 | F.W. Albrecht | Work gaging and holding means | tablesaw accessories | |