| All Patents in class 403/101 |
Patents 1 -
13
of 13
      |
| Number | Date | Patentee | Title | Type |
| 336,409 | Feb. 16, 1886 | C. Head | Transfer Bevel | bevels |
| 669,766 | Mar. 12, 1901 | C.E. Ricker | Rule Joint | folding rule joints |
| 734,013 | Jul. 21, 1903 | F.L. Traut, J.A. Traut | Foldable Rule | folding rule joints |
| 765,598 | Jul. 19, 1904 | B. Schlag | Extension Rule | folding rule joints |
| 827,480 | Jul. 31, 1906 | J.A. Traut | Extension Rule | folding rule joints |
| 909,819 | Jan. 12, 1909 | T. Prentice | Rule Joint | folding rule joints |
| 1,069,186 | Aug. 05, 1913 | F.X. Rudler | Rustless Rule | folding rule joints |
| 1,438,234 | Dec. 12, 1922 | D. Gould, W.H. Hart | Joint for Zig-Zag Folding Rules | folding rule joints |
| 1,438,235 | Dec. 12, 1922 | D. Gould, W.H. Hart | Joint for Zig-Zag Folding Rules | folding rule joints |
| 1,438,236 | Dec. 12, 1922 | D. Gould, W.H. Hart | Joint for Zig-Zag Folding Rules | folding rule joints |
| 1,907,459 | May 09, 1933 | A.L. Stowell | Folding rule | folding rules |
| 2,327,229 | Aug. 17, 1943 | L. Vavrik, K.C. Atkin | Surface treating machine | sanding machines |
| 2,713,206 | Jul. 19, 1955 | C. Zelnick | Folding rule joint | folding rule joints |
