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| Patents for John R. Memmelaar Jr. | |||||
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| Number | Date | Patentee | Title | Type | |
| 7,585,206 | Sep. 08, 2009 | J.R. Memmelaar, Jr. | Spool to Spool Continuous Through Feed System | centerless grinders | |
| D824,416 | Jul. 31, 2018 | J.R. Memmelaar, Jr., A.S. Bunagan | Display Screen With Animated Graphical User Interface | machine tool controls | |