Hargrave; Franklin
Patent Applications and Registrations
Patent applications and USPTO patent grants for Hargrave; Franklin.The latest application filed is for "line access apparatus for in-band communication".
- Hargrave; Franklin - Newtown CT
| Patent | Date |
|---|---|
| Line access apparatus for in-band communication Grant 4,750,170 - Zeller, Jr. , et al. June 7, 1 | 1988-06-07 |
| Control and routing system Grant 4,672,602 - Hargrave , et al. June 9, 1 | 1987-06-09 |
| Information transport system employing telephone lines Grant 4,665,516 - Middleton , et al. May 12, 1 | 1987-05-12 |
| System for providing remote services Grant 4,656,651 - Evans , et al. April 7, 1 | 1987-04-07 |
| Information collecting and forwarding apparatus Grant 4,654,869 - Smith , et al. March 31, 1 | 1987-03-31 |
| Test trunk access controller Grant 4,646,342 - Hargrave , et al. February 24, 1 | 1987-02-24 |
| Key telephone system with distributed control Grant 4,638,124 - Hargrave , et al. January 20, 1 | 1987-01-20 |
| Information transport system Grant 4,602,362 - Hargrave , et al. July 22, 1 | 1986-07-22 |
| Communication switching system Grant 4,601,029 - Hargrave , et al. July 15, 1 | 1986-07-15 |
| Telephone line access device for main distribution frame Grant 4,575,840 - Hargrave , et al. March 11, 1 | 1986-03-11 |
| Multiparty line adapter with privacy feature controlled by reversal of line polarity at a central power source Grant 4,528,424 - Middleton , et al. July 9, 1 | 1985-07-09 |
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