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| Patents Granted on 1991-07-?? | |||||
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| Number | Date | Patentee | Title | Type | |
| 5,027,873 | Jul. 02, 1991 | K.R. Anselm | Balancing of tooling for a wood lathe | wood lathe tools | |
| 5,028,180 | Jul. 02, 1991 | E.E. Kirkham, P.C. Sheldon | Six-Axis Machine Tool | numerically controlled milling machines | |
| 5,033,340 | Jul. 23, 1991 | L.T. Siefring | Apparatus and method for tool vibration damping | lathe tool holders and tool posts | |