| All Patents in class 33/341 |
Patents 1 -
10
of 10
      |
| Number | Date | Patentee | Title | Type |
| 49,037 | Jul. 25, 1865 | B.G. Martin | Improvement in Carpenters' Rules | rule accessories |
| 282,583 | Aug. 07, 1883 | L.S. Starrett | Beveling Instrument | combination squares |
| 285,601 | Sep. 25, 1883 | M. Farley | Bevel Square | bevel squares |
| 697,335 | Apr. 08, 1902 | I.B. Hagan | Measuring Instrument | protractors |
| 798,695 | Sep. 05, 1905 | E. Oehrle | Combination Square and Protractor | protractors |
| 820,311 | May 08, 1906 | E. Oehrle | Square and Level | squares |
| 941,492 | Nov. 30, 1909 | P.F. Burns | Combination Rule, Square and Protractor | rules |
| 980,362 | Jan. 03, 1911 | L.S. Starrett | Combined Square and Bevel Protractor | protractors |
| 1,210,370 | Dec. 26, 1916 | J. Dvorak | Combined Level and Square | levels |
| 1,871,176 | Aug. 09, 1932 | G.F. Hall | Combination bevel, squaring and leveling device | rule attachments |
