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Patents Granted on 1969-05-06 | |||||
Number | Date | Patentee | Title | Type | |
D214,078 | May 06, 1969 | F.S. Steiner | Combined Container Opener And Corkscrew | combination cork extractors | |
3,442,785 | May 06, 1969 | A.T. Easton | Machine Electrolytic Grinding Tool Control Apparatus | electrochemical machining | |
3,443,153 | May 06, 1969 | P.E. Berghausen | E. D. M. Power Supply with Current Adjusting Circuitry Responsive to Gap Condition | electrical discharge machining |