| All Patents of Type: clinometers |
Patents 1 -
8
of 8
      |
| Number | Date | Patentee | Title | Type |
| 226,723 | Apr. 20, 1880 | F.C. Davidson | Clinometer | clinometers |
| 426,696 | Apr. 29, 1890 | W.M. Washburn | Farmer's Level | clinometers |
| 444,196 | Jan. 06, 1891 | J.H. Parks | Clinometer or Slope Measurer | clinometers |
| 479,803 | Aug. 02, 1892 | J.M. Haise | Grade Measure | clinometers |
| 730,597 | Jun. 09, 1903 | W.A. Stallsmith | Clinometer | clinometers |
| 901,727 | Oct. 20, 1908 | W.H. McKeen | Plumb Level | clinometers |
| 933,912 | Sep. 14, 1909 | A.J. Matter | Protractor Level | clinometers |
| 1,255,644 | Feb. 05, 1918 | D.D. Roth | Protractor-level for drills and other tools | levels |
