| All Patents in class 33/415 |
Patents 1 -
10
of 15
      |
| Picture | Number | Date | Patentee | Title |
 | 74,297 | Feb. 11, 1868 | N.W. Burnett | Improvement in Pattern-Square |
 | 94,867 | Sep. 14, 1869 | H.N. Burr | Combination Square |
 | 183,222 | Oct. 10, 1876 | T. Simonson | Improvement in Stair-Builders' Tools |
 | 189,737 | Apr. 17, 1877 | C.B. Hopkins | Improvement in Shades for Try-Squares |
 | 269,719 | Dec. 26, 1882 | H.C. Root | Stairbuilders' Layout Devices |
 | 308,145 | Nov. 18, 1884 | W.B. Edwards | Try-Square |
 | 312,743 | Feb. 24, 1885 | B.B. Merrill | Combined Square, Bevel and Level |
 | 386,651 | Jul. 24, 1888 | C.F. Nichols | Attachment for Squares |
 | 406,724 | Jul. 09, 1889 | M. Gates | Adjustable Miter Bevel |
 | 569,963 | Oct. 20, 1896 | O. Engman | Combined square, level, and T-square |
