| Patents for Service Diamond Tool Co. |
Patents 1 -
8
of 8
      |
| Number | Date | Patentee | Title | Type |
| 2,353,236 | Jul. 11, 1944 | D.R. Hammill, L. Small | Diamond tool | grinder dressers |
| 2,545,676 | Mar. 20, 1951 | L. Small | Diamond impregnated dressing tool | grinder dressers |
| 2,581,609 | Jan. 08, 1952 | L. Small | Diamond tool | grinder dressers |
| 2,726,540 | Dec. 13, 1955 | L. Small, M.G. Antonik | Hardness testing apparatus | metal hardness testers |
| 2,844,957 | Jul. 29, 1958 | L. Small | Motorized hardness tester | metal hardness testers |
| 2,986,030 | May 30, 1961 | L. Small | Hardness testing apparatus | metal hardness testers |
| 3,084,538 | Apr. 09, 1963 | H. Small, L. Small | Tester for plastic deformation and elastic deformation of tested materials | metal hardness testers |
| 3,538,903 | Nov. 10, 1970 | L. Small | Cutting tool holder | grinder dressers |
