Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7508622 | Electronic data connector of data storage cartridge and associated read/write device | Robert C. Martin, Peter L. Groel, Leo W. Spychalla | 2009-03-24 |
| 7054101 | System for high density linear serpentine data recording | Peter L. Groel | 2006-05-30 |
| 6745976 | Data tape speed tachometer using a porous roller bearing | — | 2004-06-08 |
| 6609645 | Porous roller bearing | Peter L. Groel | 2003-08-26 |