| Patents for Lufkin Rule Company |
Patents 46 -
60
of 79
      |
| Number | Date | Patentee | Title | Type |
| 2,212,910 | Aug. 27, 1940 | E.J. Witchger | Micrometer gauge | measurement gauges |
| 2,228,497 | Jan. 14, 1941 | E.J. Witchger | Indicating device for measuring instruments | |
| 2,314,915 | Mar. 30, 1943 | E.J. Witchger | Measuring tape | tape measures |
| RE22,908 | Aug. 12, 1947 | E.J. Witchger | Measuring tape | tape measures |
| 2,426,962 | Sep. 02, 1947 | E.J. Witchger | Process for making measuring tapes | |
| 2,469,674 | May 10, 1949 | E.J. Witchger | Tape rule | tape measures |
| 2,471,709 | May 31, 1949 | E.J. Witchger | Steel measuring rule | |
| 2,518,414 | Aug. 08, 1950 | E.J. Witchger | Demountable adjusting means for machine gauges | |
| 2,563,984 | Aug. 14, 1951 | E.J. Witchger | Adjustable plug gauge | |
| 2,607,549 | Aug. 19, 1952 | E.J. Witchger | Stop for detachable measuring tapes | |
| 2,655,324 | Oct. 13, 1953 | J.L. Clark | Detachable tape measure | tape measures |
| 2,694,861 | Nov. 23, 1954 | C. Zelnick | Machinists gauge | |
| 2,713,206 | Jul. 19, 1955 | C. Zelnick | Folding rule joint | folding rule joints |
| 2,726,626 | Dec. 13, 1955 | C. Zelnick | Dial test indicator | |
| 2,727,701 | Dec. 20, 1955 | C. Zelnick | Tape measure | tape measures |
