| All Patents in class D10/69 |
Patents 16 -
30
of 31
      |
| Number | Date | Patentee | Title | Type |
| D34,017 | Jan. 29, 1901 | F.O. Farwell | Design for a Casing for Inclinometers | levels |
| 784,674 | Mar. 14, 1905 | A. Haag | Combination Tool | bevels |
| D42,347 | Mar. 26, 1912 | A.D. Armstrong | Design for a Level | levels |
| D43,191 | Oct. 29, 1912 | W. Disston | Design for a Level | wooden levels |
| D43,192 | Oct. 29, 1912 | W. Disston | Design for a Level | wooden levels |
| 1,159,522 | Nov. 09, 1915 | F.B. Miller | Level | metallic levels |
| 1,229,356 | Jun. 12, 1917 | O.C. Watkins | Weather-Boarding Gage | clapboard markers |
| 1,308,699 | Jul. 01, 1919 | W.L. Cusick | Combined Level, Plumb, and Gage | levels |
| 1,318,162 | Oct. 07, 1919 | E.J. Loring | Luminous Level | levels |
| D59,927 | Dec. 06, 1921 | A.T. Richardson | Design for an Inspector's Track Level and Gage | levels |
| D59,943 | Dec. 06, 1921 | D.C. Watson | Design for a Level | metallic levels |
| 1,426,454 | Aug. 22, 1922 | G. Bredeson | Peerless Level | wooden levels |
| 1,738,791 | Dec. 10, 1929 | G.R. Ober | Level | wooden levels |
| D95,289 | Apr. 16, 1935 | F.F. Sand | Design for a Spirit Level | levels |
| D98,684 | Feb. 25, 1936 | A. Langsner | Design for a Vial Housing Unit | levels |
