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| Patents Granted on 1987-07-21 | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,680,994 | Jul. 21, 1987 | R.P. Singleton | Socket Wrench With Reversing Ratchet | ratchet wrenches | |
| 4,681,006 | Jul. 21, 1987 | D. Miller | Blade tensioning device for scroll saw | ||