Issued Patents All Time
Showing 26–31 of 31 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4914649 | Multiple frequency message system | Robert J. Schwendeman | 1990-04-03 |
| 4873520 | Paging receiver for storing digitized voice messages | Kenneth D. Fisch, Alfred R. Lucas | 1989-10-10 |
| 4803487 | Portable communications receiver with separate information presentation means | Philip P. Macnak | 1989-02-07 |
| 4803703 | Apparatus and method for fine synchronization of a communication receiver | Michael J. DeLuca | 1989-02-07 |
| 4412217 | Pager with visible display indicating status of memory | Gerald W. Tidwell | 1983-10-25 |
| 4385295 | Pager with visible display indicating unread messages | Gerald W. Tidwell | 1983-05-24 |