Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D309584 | Portable control housing for gas purging system | Jagadisan Krishnamurthy | 1990-07-31 |
| D270732 | Printer unit | Richard B. Brown | 1983-09-27 |
| 4320430 | Recording disc cartridge closure mechanism | — | 1982-03-16 |