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| Patents Granted on 1987-06-02 | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,669,227 | Jun. 02, 1987 | B.C. Treppner | Angle Plate Apparatus With Precisely Adjustable Workpiece Holder | angle bars and angle plates | |
| 4,669,346 | Jun. 02, 1987 | R.J. Benedict | Machine with Work Positioning Carriage | punch presses | |