| All Patents in class 33/426 |
Patents 16 -
30
of 33
      |
| Number | Date | Patentee | Title | Type |
| 830,727 | Sep. 11, 1906 | E.H. Long | Combined Square, Bevel and Protractor | squares |
| 953,863 | Apr. 05, 1910 | D.E. Shaw | Combination Attachment for Tools | bevels |
| 1,100,530 | Jun. 16, 1914 | C.O. Buckland | Carpenter's Sqaure | squares |
| 1,157,825 | Oct. 26, 1915 | R.N. Van Buskirk | Draftsman's Protractor | protractors |
| 1,207,980 | Dec. 12, 1916 | J. Nash | Adjustable Triangle or Square and Protractor | bevels |
| 1,241,282 | Sep. 25, 1917 | F. Hughes, A.M. Remer | Combination-Square | squares |
| 1,285,513 | Nov. 19, 1918 | W.T. Wheeler | Combination Tool | handsaw depth gages |
| 1,286,332 | Dec. 03, 1918 | V.H. Johns | Try-Square | squares |
| 1,365,991 | Jan. 18, 1921 | A.H. Helden | Combined Fixed-Angle Square and Protractor | bevels |
| 1,382,460 | Jun. 21, 1921 | K. Berglof | Micrometer Protractor | protractors |
| 1,393,970 | Oct. 18, 1921 | J.H. Roberts | Geometrical Tool | bevels |
| 1,403,606 | Jan. 17, 1922 | C.L. Klapproth | Level | levels |
| 1,488,916 | Apr. 01, 1924 | A. George | Folding Square and Protractor | combination tools |
| 1,526,233 | Feb. 10, 1925 | E.J. Koile | Drafting Square | bevels |
| 1,579,197 | Mar. 30, 1926 | J.W. Dunham | Protractor Attachment for Squares | squares |
