| All Patents in class 33/26 |
Patents 1 -
9
of 9
      |
| Number | Date | Patentee | Title | Type |
| 15,183 | Jun. 24, 1856 | C.R. Iliff | Drafting Protractors | protractors |
| 100,072 | Feb. 22, 1870 | W. Ritchie | Improvement in Instruments for Drawing Geometrical Lines | compasses |
| 336,834 | Feb. 23, 1886 | E.O. Boyle | Glass Cutting Gage | glazier |
| 363,942 | May 31, 1887 | F.L. Bailey | Engraver's Ruling Machine | metal engraving machines |
| 643,204 | Feb. 13, 1900 | J.F. Rose | Carpenter's Rule | compasses |
| 1,266,010 | May 14, 1918 | C.F. Golden | Compass | |
| 1,436,471 | Nov. 21, 1922 | A.E. Bell | Combined Protractor and Trammel | protractors |
| 2,397,109 | Mar. 26, 1946 | O.C. Hedin | Device for precision drawing | |
| 4,194,543 | Mar. 25, 1980 | L.M. Cotton | Grooving Indexer for Routing Apparatus | handheld power tool accessories |
