Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4924512 | Method and apparatus for preventing recognition of a telephone dialing signal | Norman Sizemore | 1990-05-08 |
| 4656343 | Method and apparatus for processing documents | Charles Kent | 1987-04-07 |