| All Patents in class 33/481 |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 223,709 | Jan. 20, 1880 | M.B. Cornell | Framing Squares | carpenter squares |
| 235,434 | Dec. 14, 1880 | W.C. Hoffmeister | Double Try Square | try squares |
| 351,820 | Nov. 02, 1886 | M.P. Ward | Try Square | try squares |
| 573,795 | Dec. 22, 1896 | R.E. Poindexter | Combined weather-boarding and try square | try squares |
| 1,148,196 | Jul. 27, 1915 | W.L. Simmons | Universal Right Angle Iron | squares |
| 1,179,368 | Apr. 11, 1916 | W. Brogdan | Try Square | try squares |
| 2,754,595 | Jul. 17, 1956 | W.S. Lesner | Combined Square and Gauge Block | squares |
