| All Patents in class 33/383 |
Patents 1 -
15
of 22
      |
| Number | Date | Patentee | Title | Type |
| 35,298 | May 20, 1862 | A. Cahoon, Jr. | Improvement in Combined Spirit-Levels | inclinometers |
| 36,906 | Nov. 11, 1862 | T.N. Hosmer | Improvement in Spirit-Levels | level adjustments |
| 68,603 | Sep. 10, 1867 | A. Stanley, S.N. Chapin | Improvement in Adjusting Spirit Levels | wooden levels |
| 283,564 | Aug. 21, 1883 | B.B. Butt | Right Angled Level | machinist levels |
| 288,624 | Nov. 20, 1883 | L.L. Davis | Spirit Level and Plumb | metallic levels |
| 370,054 | Sep. 20, 1887 | P.L. Fox | Spirit level | levels |
| 573,682 | Dec. 22, 1896 | W.M. Morton | Spirit-Level and Plumb | level adjustments |
| 646,098 | Mar. 27, 1900 | M. Nilson | Leveling Instrument | |
| 719,061 | Jan. 27, 1903 | J.A. Traut | Leveling Instrument | inclinometers |
| 742,077 | Oct. 20, 1903 | O. Sovelius | Axle or Shaft Marker | punches |
| 756,949 | Apr. 12, 1904 | R.B. Ferguson | Spirit Level | spirit levels |
| 792,821 | Jun. 20, 1905 | M. Golightly | Combined Leveling and Pitch Indicator | inclinometers |
| 806,987 | Dec. 12, 1905 | A.F. McDowell | Level | inclinometers |
| 895,573 | Aug. 11, 1908 | W.L. Myers | Spirit level | |
| 902,269 | Oct. 27, 1908 | J.D. Weaver | Spirit-Level | inclinometers |
