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| Patents Granted on 1997-04-?? | |||||
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| Number | Date | Patentee | Title | Type | |
| 5,616,917 | Apr. 01, 1997 | Y. Dai | Device for Measuring an Angle Between Pivotally-Connected Members | ||
| 5,622,092 | Apr. 22, 1997 | W.R. Gleason | System For Simultaneously Setting Stroke On A Crankshaft Lathe | crankshaft lathes | |