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| Patents for Charles F. Thayer | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 424,565 | Apr. 01, 1890 | P. Miller | Auger | |
 | 477,959 | Jun. 28, 1892 | J.B. Price | Center & Key Seating Rule | |
 | 477,960 | Jun. 28, 1892 | J.B. Price | Surface Gage | |