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| Patents Granted on 1951-08-21 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,565,223 | Aug. 21, 1951 | M.B. Gentzel | Belt tightening and aligning mechanism for abrading devices | handheld power sanders | |
| 2,565,330 | Aug. 21, 1951 | V.v. Sundt | Power Chuck | metal lathe chucks | |