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| All Patents in class 403/61 | |||||
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| Number | Date | Patentee | Title | Type | |
| 266,556 | Oct. 24, 1882 | J.A. Traut | Try Square | squares | |
| 547,540 | Oct. 08, 1895 | J.E. Duncan | Try and Bevel Square | try squares | |
| 769,325 | Sep. 06, 1904 | E.A. Schade | Bevel | bevels | |
| 781,971 | Feb. 07, 1905 | J.F. Thomas | Bevel Square | ||
| 985,132 | Feb. 28, 1911 | A.W. Benskin | Try-Square | try squares | |