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| Patents Granted on 1988-03-29 | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,733,501 | Mar. 29, 1988 | F.A. McLean | Honing guide | ||
| 4,734,000 | Mar. 29, 1988 | J.O. Lenz | Power drawbar wrench | metalworking machine mechanisms | |