| All Patents in class 33/402 |
Patents 1 -
10
of 12
      |
| Picture | Number | Date | Patentee | Title |
 | 956 | Oct. 03, 1838 | L. Lewis | Balance and Pendulum Level and Plumb |
 | 36,312 | Aug. 26, 1862 | E. Thayer | Plane Angulometer |
| | 361,728 | Apr. 26, 1887 | F. Sonntag | Plumb Level |
 | 370,013 | Sep. 13, 1887 | O.B. Fuller | Pendulum Level |
 | 399,859 | Mar. 19, 1889 | A.B. Ewing | Plumb Level |
 | 423,090 | Mar. 11, 1890 | F.F. Smith | Combined Square, Plumb, and Level |
| | 878,507 | Feb. 11, 1908 | J.M. Coghlan | Opticians Measuring Instrument |
 | 1,186,552 | Jun. 13, 1916 | F.W. Weesner, D. Cohen | Shoulder Measuring Device |
 | 1,219,430 | Mar. 20, 1917 | A.W. Bjornstad | Instrument for Use in Topography |
 | 1,404,393 | Jan. 24, 1922 | T. Henri | Combined Level and Grade Finder |
