Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7251321 | Crescendo telephone ringer | Ronald S. Lesniak, Spencer L. Hermanson, Mario E. Jauregui | 2007-07-31 |
| 6567512 | Electronic programmer for telephones with auto-dial | Spencer L. Hermanson, William G. Marks, Mario E. Jauregui, Charles R. Jackson | 2003-05-20 |
| 6456713 | Method and apparatus for detecting data port usage | Mario E. Jauregui, Elaine C. He, Ronald S. Lesniak, Spencer L. Hermanson | 2002-09-24 |
| 6252957 | Low power line selection circuit for a telephone | Mario E. Jauregui, Elaine C. He, Spencer L. Hermanson | 2001-06-26 |