| All Patents in class 116/300 |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 5,667X | Oct. 10, 1829 | J. Russell | Bell-Hanging | door and window hardware |
| 268,107 | Nov. 28, 1882 | W. Lang | Speed Indicator | measurement gauges |
| 1,486,968 | Mar. 18, 1924 | H.E. Kempton | Precision Device for Boring Machines and the Like | horizontal boring mill attachments |
| 2,486,645 | Nov. 01, 1949 | E.F. Hager | Toolmaker's optical instrument having mounting features and scale graduations | optical measuring gauges |
| 2,707,931 | May 10, 1955 | W.J. Croshier, E.M. Boat | Tolerance Marker for Dial Indicator Gages | |
| 3,086,493 | Apr. 23, 1963 | E.P. Bullard, III | Indicating Device | |
