Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5883945 | Three-way call detection and response system | Charles T. Richardson, Jr., Samuel F. Billingsley, III | 1999-03-16 |
| 5745558 | Three-way call detection and response system | Charles T. Richardson, Jr., Samuel F. Billingsley, III | 1998-04-28 |
| 4602377 | Diamond-anvil high-pressure cell with improved X-ray collimation system | David Schiferl, Barton W. Olinger | 1986-07-22 |