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| Patents Granted on 1970-04-07 | |||||
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| Number | Date | Patentee | Title | Type | |
| CA-838,788 | Apr. 07, 1970 | J.D. Barclay, J.C. Jones | Motor Control System for Grinding Machines | roll grinding machines | |
| 3,504,413 | Apr. 07, 1970 | H.J. Matsche, Jr., R.J. Siewert | Cutting Blades for Block Type Cutting Tools | insert tool holders | |
| 3,504,442 | Apr. 07, 1970 | A.J. Allen | Setting of cutting tools | metalworking machine mechanisms | |
| 3,505,188 | Apr. 07, 1970 | P. Pan | Electrolytic Flotation Method and Apparatus | electrolysis apparatus | |