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| Patents for Henry J. Thayer | |||||
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| Number | Date | Patentee | Title | Type | |
| 477,959 | Jun. 28, 1892 | J.B. Price | Center & Key Seating Rule | center marking gauges | |
| 477,960 | Jun. 28, 1892 | J.B. Price | Surface Gage | surface gauges | |