Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9491027 | Miniature mobile marker system and method | John J. Murphy, Dennis A. Zimmerman, Marc-Yvon Comeau | 2016-11-08 |
| 8143900 | Communication system fault location using signal ingress detection | Dennis A. Zimmerman | 2012-03-27 |
| 4494138 | Segmented upstream management for cable television | — | 1985-01-15 |
| 4491968 | Status monitor | Dennis A. Zimmerman | 1985-01-01 |
| 4298844 | Split-band redundant amplifier system | — | 1981-11-03 |
| 4237486 | Compatible transmission of an encoded signal with a television | — | 1980-12-02 |