Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4821319 | Single line telephone communication system | Francisco A. Middleton | 1989-04-11 |
| 4782480 | Telephone line access apparatus | Franklin Hargrave, Francisco A. Middleton | 1988-11-01 |
| 4750170 | Line access apparatus for in-band communication | Francisco A. Middleton, Franklin Hargrave | 1988-06-07 |
| 4668902 | Apparatus for optimizing the charging of a rechargeable battery | — | 1987-05-26 |
| 4654869 | Information collecting and forwarding apparatus | Mark G. Smith, Karen J. French, Franklin Hargrave, Francisco A. Middleton | 1987-03-31 |
| 4646342 | Test trunk access controller | Franklin Hargrave, Mark G. Smith, William L. Hull, Francisco A. Middleton | 1987-02-24 |