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| Patents Granted on 1981-09-29 | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,291,597 | Sep. 29, 1981 | H. Allen | Cork extractor | self and partial cork pullers | |
| 4,292,577 | Sep. 29, 1981 | M.R. Cesarz, R.E. Stobbe | A.C. Motor Control Circuit | motor controls | |