| All Patents in class 33/343 |
Patents 1 -
10
of 24
      |
| Picture | Number | Date | Patentee | Title |
 | 60,690 | Jan. 01, 1867 | G.L. Chamberlain | Improvement in Combined Square and Level |
 | 101,477 | Apr. 05, 1870 | J.A. Littlefield | Improvement in Combined Square, Protractor, Level, & c. |
 | 201,371 | Mar. 19, 1878 | W.P. Walter | Improvement in Combined Bevel, Square, and Level |
 | 303,666 | Aug. 19, 1884 | F.W. Ritchie | Combination tool |
 | 304,601 | Sep. 02, 1884 | F.W. Boettcher | Combined Square, Level and Triangle |
 | 312,743 | Feb. 24, 1885 | B.B. Merrill | Combined Square, Bevel and Level |
 | 329,156 | Oct. 27, 1885 | W. Ford | Combination Square and Gage |
 | 339,158 | Apr. 06, 1886 | J.A. Finley | Combined square, level, and bevel |
 | 419,615 | Jan. 14, 1890 | C. Stilwell | Adjustable Bevel Square |
 | 426,001 | Apr. 22, 1890 | H.W. Evans | Combined Square, Level & Surface Gage |
