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| Patents Granted on 1980-03-04 | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,190,948 | Mar. 04, 1980 | E.J. Kielma | Vertical Spindle Machine Tool With Tiltable Spindle and Tiltable Automatic Tool Changer | tool changers and storage mechanisms | |
| 4,191,059 | Mar. 04, 1980 | R.A. Vanslette | Linear Actuator | ||