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| Patents Granted on 1992-10-20 | |||||
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| Number | Date | Patentee | Title | Type | |
| 5,156,375 | Oct. 20, 1992 | R.D. Liegel, J.G. Ballard | Load carrying adaptor for a transmission jack | hydraulic jacks | |
| 5,156,782 | Oct. 20, 1992 | R. Ballantyne | Maintaining press platens in parallel relationship | hydraulic metalworking presses | |