Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D307588 | Key unit housing for a telephone call processor | William C. Barker, Ross E. Fraser, Michael W. Pflueger, Kamal S. Sethia | 1990-05-01 |
| D304717 | Base housing for a multi-feature telephone call processor | William C. Barker, Ross E. Fraser, Michael W. Pflueger, Kamal S. Sethia | 1989-11-21 |
| D304727 | Base housing for a multi-feature telephone call processor | William C. Barker, Ross E. Fraser, Michael W. Pflueger, Kamal S. Sethia | 1989-11-21 |