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| All Patents in class 73/79 | |||||
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| Number | Date | Patentee | Title | Type | |
| 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 | |