Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5291541 | Coupling apparatus for telephone handsets | Larry A. Marcus, Frederick A. Rosebrock, Perry K. White | 1994-03-01 |
| 4731880 | Communication network | Cyrus F. Ault | 1988-03-15 |