Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8964727 | Telephony and data network services at a telephone | William Allan, Kris W. Kramer, Larry John David, Kenneth M. Orford, Peter Blatherwick +5 more | 2015-02-24 |
| 7761541 | Service enabling technology | Kris W. Kramer, Peter Blatherwick | 2010-07-20 |
| 7660295 | Telephony and data network services at a telephone | William Allan, Kris W. Kramer, Larry John David, Kenneth M. Orford, Peter Blatherwick +5 more | 2010-02-09 |
| 7068641 | Telephony and data network services at a telephone | William Allan, Kris W. Kramer, Larry John David, Kenneth M. Orford, Peter Blatherwick +5 more | 2006-06-27 |
| 4996684 | Electronic systems and effective reduction of electromagnetic interference energy propagation from electronic systems | Roland A. Smith, Paul D. Sayre | 1991-02-26 |
| 4944004 | Interface circuit with transient event tolerance | Edward C. Carew | 1990-07-24 |
| 4893310 | Digital key telephone system | David Joseph Robertson, Ronald J. Maginley, Alan Stanley John Chapman, Terence Neil Thomas, Nadir Nizamuddin +2 more | 1990-01-09 |