| All Patents of Type: metal hardness testers |
Patents 1 -
15
of 21
      |
| Number | Date | Patentee | Title | Type |
| GB-190,810,752 | Nov. 19, 1908 | A.F. Shore | A Method of and Apparatus for Testing and Indicating the Hardness of Solid Bodies, which Apparatus I call a Scleroscope. | metal hardness testers |
| 962,790 | Jun. 28, 1910 | A.F. Shore | Scleroscope | metal hardness testers |
| 1,121,050 | Dec. 15, 1914 | A.F. Shore | Scleroscope | metal hardness testers |
| 1,154,663 | Sep. 28, 1915 | W.F. Shore | Scleroscope | metal hardness testers |
| GB-156,681 | May 08, 1922 | W.F. Shore | Improvements in Scleroscopes | metal hardness testers |
| 1,516,207 | Nov. 18, 1924 | S.P. Rockwell | Hardness-testing machine | metal hardness testers |
| 1,516,208 | Nov. 18, 1924 | S.P. Rockwell | Hardness-testing machine | metal hardness testers |
| 1,571,310 | Feb. 02, 1926 | C.H. Wilson | Penetrator for testing penetration hardness | metal hardness testers |
| 1,768,639 | Jul. 01, 1930 | W.F. Shore, A.F. Shore | Gauge | metal hardness testers |
| 1,770,045 | Jul. 08, 1930 | C.P. Shore, A.F. Shore | Apparatus for Measuring the Hardness of Materials | metal hardness testers |
| 1,770,046 | Jul. 08, 1930 | A.F. Shore | Apparatus for Measuring the Hardness of Materials | metal hardness testers |
| 1,885,972 | Nov. 01, 1932 | C.H. Wilson | Hardness testing gauge | metal hardness testers |
| 1,890,923 | Dec. 13, 1932 | C.H. Wilson | Test piece support for hardness testers | metal hardness testers |
| CA-336,012 | Sep. 26, 1933 | C.H. Wilson | Hardness tester | metal hardness testers |
| CA-395,516 | Mar. 25, 1941 | C.H. Wilson | Hardness testing device | metal hardness testers |
