Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8498389 | Facilitation of a conference call | — | 2013-07-30 |
| 7539290 | Facilitation of a conference call | — | 2009-05-26 |
| 6931113 | Facilitation of a conference call | — | 2005-08-16 |
| 6552832 | Telecommunications system including transmultiplexer installed between digital switch and optical signal transmission fiber | John D. Beierle, Jacob Needle | 2003-04-22 |
| 6157716 | Power feed circuit providing both on-hook and off-hook power for telephone subscriber loop | — | 2000-12-05 |
| 6009084 | Concentrating transmultiplexer for cable telephony | John D. Beierle | 1999-12-28 |
| 5715242 | System for integrated distribution of switched voice and television on coaxial cable with phase distortion correction | John D. Beierle | 1998-02-03 |
| 5351234 | System for integrated distribution of switched voice and television on coaxial cable | John D. Beierle | 1994-09-27 |
| 5263021 | System for integrated distribution of switched voice and television on coaxial cable | — | 1993-11-16 |
| 5119416 | Automated telephone number identification for automatic intercept in telephone networks | — | 1992-06-02 |