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| Patents Granted on 1978-05-09 | |||||
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| Number | Date | Patentee | Title | Type | |
| 4,087,901 | May 09, 1978 | F. Zankl, E.R. Lohneis | Tool Change Mechanism for Machine Tools | tool changers and storage mechanisms | |
| 4,088,856 | May 09, 1978 | L.W. Tebben | Perimeter safety switch mounted to support disposed remote from machine body | sanding machines | |