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| Patents for Orval A. Opperthauser | |||||
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| Number | Date | Patentee | Title | Type | |
| 3,062,353 | Nov. 06, 1962 | O.A. Opperthauser | Work transfer mechanism | workpiece changers and storage mechanisms | |
| 3,153,355 | Oct. 20, 1964 | R.W. Agnello, O.A. Opperthauser | Index table | indexers and dividers | |
| 3,268,979 | Aug. 30, 1966 | O.A. Opperthauser, J.W. Stewart | Cutting tool | milling machine cutters | |
| 3,370,815 | Feb. 27, 1968 | O.A. Opperthauser | Shock absorbing pad for conduit clamping device | hydraulic apparatus | |