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| Patents for Albert H. Tompkins | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,897,636 | Aug. 04, 1959 | R.S. Pyne, A.H. Tompkins | Work rest for a centerless grinder | centerless grinders | |
| 2,990,656 | Jul. 04, 1961 | A.H. Tompkins | Automatically operable centerless grinder | centerless grinders | |