Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D282463 | Remote communication monitor and telephonic alarm | David Barr, Kenneth E. Blanchard, Bernard A. Grae | 1986-02-04 |
| 4225949 | Method of and apparatus for navigating unmarked channels | Douglas Price, Phillip Henry Jones | 1980-09-30 |