Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6220840 | Wall shape for scroll-type compressor vanes | John Calhoun | 2001-04-24 |
| 5836752 | Scroll-type compressor with spirals of varying pitch | John Calhoun | 1998-11-17 |
| 5127837 | Electrical connectors and IC chip tester embodying same | Arun Shah, Albert N. Hopfer, Richard J. Linderman, Saeed Zafar | 1992-07-07 |