| All Patents in class 33/354 |
Patents 1 -
15
of 23
      |
| Number | Date | Patentee | Title | Type |
| 108,875 | Nov. 01, 1870 | H.L. Buckwalter | Improvements in Squares and Levels | levels |
| 171,176 | Dec. 14, 1875 | R.H. Russel | Combination Surface Gauge, Compass, and Wire Cutter | surface gauges |
| 230,440 | Jul. 27, 1880 | J. Russell | Carpenter's Gage Tool | |
| 267,655 | Nov. 14, 1882 | W.C. Vajen | Plumb Bob | plumb bobs |
| 283,564 | Aug. 21, 1883 | B.B. Butt | Right Angled Level | machinist levels |
| 295,100 | Mar. 11, 1884 | S.H. Bellows | Combined Bevel and T-Square | protractors |
| 312,548 | Feb. 17, 1885 | J.W. Atkinson | L-Shaped Level | levels |
| 339,287 | Apr. 06, 1886 | C. Gates | Combined plumb, level, and square | levels |
| 363,491 | May 24, 1887 | B.F. Van Amringe | Combined Bevel-Square, Beam Compass, Level, and Gage | combination tools |
| 389,647 | Sep. 18, 1888 | J.A. Traut, G.F. Hall | "Odd Jobs" Layout Tool | rule attachments |
| 461,757 | Oct. 20, 1891 | R.C. Huxtable | Chalk Line Holder and Plummet | |
| 464,598 | Dec. 08, 1891 | J.M. Pine, E.B. Andrus, J.T. Welton | Plumb and Level | |
| 642,888 | Feb. 06, 1900 | A. Van Vliet | Combination Tool | carpenter squares |
| 655,561 | Aug. 07, 1900 | J. Kurig | Level Quadrant for High Elevation Guns | inclinometers |
| 659,513 | Oct. 09, 1900 | A.P. Dubus | Square | miter squares |
