Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11159425 | Adaptive IPv4 address pool | — | 2021-10-26 |
| 7051090 | Unified voice and data networking having demarcation lines | — | 2006-05-23 |
| 6721790 | User settable unified workstation identification system | — | 2004-04-13 |
| 6512760 | Alternate wide area network access facility for locally networked computing devices | — | 2003-01-28 |
| 6456633 | Unified distributed voice and data local area networking | — | 2002-09-24 |
| 5930346 | Extended public switched telephone network architecture with enhanced subscriber control on call setup | — | 1999-07-27 |
| 5596631 | Station controller for distributed single line PABX | — | 1997-01-21 |
| 5528675 | Network interface unit | — | 1996-06-18 |
| 5473965 | Automatic screw feeding mechanism for an automatic screw driving device | — | 1995-12-12 |
| 5317631 | Local switching system | — | 1994-05-31 |
| 5138913 | Automatic screw feeding mechanism for an automatic screw driving device | — | 1992-08-18 |
| 5087205 | Adjustable interactive audio training system | — | 1992-02-11 |
| 5022069 | Modular automatic telephone switching system | — | 1991-06-04 |
| 4782937 | Escrow device for coin-operated systems | Douglas Lau | 1988-11-08 |