| All Patents in class 33/496 |
Patents 1 -
10
of 12
      |
| Picture | Number | Date | Patentee | Title |
 | 245,874 | Aug. 16, 1881 | T.J. Sayre | Sliding Gage for Joint-Rules |
 | 415,944 | Nov. 26, 1889 | C. Gerhardt, H. Horn | Combined Rule and Protractor |
 | 715,194 | Dec. 02, 1902 | P.M. Callahan | Combined Rule and Square |
 | 718,300 | Jan. 13, 1903 | M.G. Bailey | Rule Attachment |
 | 914,635 | Mar. 09, 1909 | J.B. McDonald, J.N. Bryant | Lumber Rule |
 | 981,598 | Jan. 10, 1911 | A.W. Sandelin | Combined Rule and Protractor |
 | 999,725 | Aug. 08, 1911 | H.J. Adams, W.S. Adams | Combined Protractor and Rule |
| | 1,264,531 | Apr. 30, 1918 | H.H. Lambert | Combination Rule |
 | 1,286,525 | Dec. 03, 1918 | F. Buck | Joint for Folding Rulers |
 | 1,551,501 | Aug. 25, 1925 | W.L. Hurlburt | Rule Center Hinge |
