Hamatani; Fumikazu
Patent Applications and Registrations
Patent applications and USPTO patent grants for Hamatani; Fumikazu.The latest application filed is for "digital telephone set capable of being simultaneously used by a plurality of persons by using one transmission line".
- Hamatani; Fumikazu - Kawasaki JP
- Hamatani; Fumikazu - Milford CT
- Hamatani; Fumikazu - Kawasakishi JP
| Patent | Date |
|---|---|
| Digital telephone set capable of being simultaneously used by a plurality of persons by using one transmission line Grant 5,182,768 - Nakano , et al. January 26, 1 | 1993-01-26 |
| Communications system having voice and digital data capability and employing a plurality of voice and data buses in main service unit and serial packetized transmission to and from telephones Grant 4,740,955 - Litterer , et al. April 26, 1 | 1988-04-26 |
| Data transmission apparatus Grant 4,341,927 - Shinoi , et al. July 27, 1 | 1982-07-27 |
| Key telephone call signalling circuit Grant 4,185,173 - Kerman , et al. January 22, 1 | 1980-01-22 |
| Pulse counting circuit Grant 4,087,649 - Kerman , et al. May 2, 1 | 1978-05-02 |
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