| All Patents of Type: test indicators |
Patents 1 -
15
of 40
      |
| Number | Date | Patentee | Title | Type |
| 272,107 | Feb. 13, 1883 | L.H. Wattles | Device for Centralizing | test indicators |
| 505,870 | Oct. 03, 1893 | F.R. Young | Truing Up Indicator | test indicators |
| 520,201 | May 22, 1894 | J. Bath | Micrometer Indicator | test indicators |
| 526,960 | Oct. 02, 1894 | J. Bath | Micrometer Indicator | test indicators |
| 598,927 | Feb. 15, 1898 | C.E. Hauer | Universal Indicator | test indicators |
| 659,048 | Oct. 02, 1900 | J. Boulet | Micrometer Indicator | test indicators |
| 682,450 | Sep. 10, 1901 | J. Boulet | Micrometer Indicator | test indicators |
| 715,582 | Dec. 09, 1902 | H.D. Waterhouse, F.B. Jacobs | Test Indicator | test indicators |
| 752,752 | Feb. 23, 1904 | J. Boulet | Micrometer Indicator | test indicators |
| 773,425 | Oct. 25, 1904 | A.E. Babin, G.G. Riggs | Lathe Test Indicator | test indicators |
| 825,911 | Jul. 17, 1906 | H. Koch | Test Indicator | test indicators |
| 904,277 | Nov. 17, 1908 | F.G. Purinton | Liquid Micrometer Indicator | test indicators |
| 937,978 | Oct. 26, 1909 | P.G. Wheeler | Test Indicator | test indicators |
| 1,006,924 | Oct. 24, 1911 | E.M. Erb | Test Indicator | test indicators |
| 1,019,400 | Mar. 05, 1912 | V. Langsdon, L.W. Zuegner | Universal Test Indicator | test indicators |
