| All Patents in class 33/388 |
Patents 46 -
59
of 59
      |
| Number | Date | Patentee | Title | Type |
| 792,821 | Jun. 20, 1905 | M. Golightly | Combined Leveling and Pitch Indicator | inclinometers |
| 806,987 | Dec. 12, 1905 | A.F. McDowell | Level | inclinometers |
| 809,699 | Jan. 09, 1906 | B. Kern, Jr. | Clinometer | inclinometers |
| 819,965 | May 08, 1906 | H.S. Williams | Leveling Instrument | levels |
| 824,985 | Jul. 03, 1906 | J.J. Greene | Plumb and Level | levels |
| 842,999 | Feb. 05, 1907 | A.O. Calhoon | Rafter and Polygon Bevel | carpenter squares |
| 903,011 | Nov. 03, 1908 | F. Schtabe | Level | |
| 948,523 | Feb. 08, 1910 | W.E. Perkins | Marking Gage | special purpose gauges |
| 953,863 | Apr. 05, 1910 | D.E. Shaw | Combination Attachment for Tools | bevels |
| 1,007,303 | Oct. 31, 1911 | F.W. Merriman | Level | level adjustments |
| 1,036,601 | Aug. 27, 1912 | D.W. Frank, Sr. | Conbined Level, Plumb and Grade Finder | inclinometers |
| 1,255,644 | Feb. 05, 1918 | D.D. Roth | Protractor-level for drills and other tools | levels |
| 1,498,158 | Jun. 17, 1924 | J.A. Eden | Spirit-Level | level adjustments |
| 2,235,321 | Mar. 18, 1941 | T.F. Krumm | Camber and Caster Gauge | special purpose gauges |
