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| All Patents in class 73/856 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,890,923 | Dec. 13, 1932 | C.H. Wilson | Test piece support for hardness testers | metal hardness testers | |
| 5,837,901 | Nov. 17, 1998 | P. Poggi, D. Sola | Reconfigurable Supporting Fixture, Particularly for a Measuring Machine, and Relative Configuration Method | ||