Mattern; Alfred
Patent Applications and Registrations
Patent applications and USPTO patent grants for Mattern; Alfred.The latest application filed is for "digital time division multiplex telecommunication network".
- Mattern; Alfred - Grobenzell DE
- Mattern; Alfred - Groebenzell DE
| Patent | Date |
|---|---|
| Digital time division multiplex telecommunication network Grant 4,189,624 - Mattern February 19, 1 | 1980-02-19 |
| Process for operating sub-zones of a digital T.D.M. telecommunications network for long distance traffic Grant 4,166,198 - Mattern August 28, 1 | 1979-08-28 |
| Digital time division multiplex telecommunication network Grant 4,129,750 - Mattern December 12, 1 | 1978-12-12 |
| Method of operating a PCM time-division multiplex telecommunication network Grant 4,011,412 - Mattern March 8, 1 | 1977-03-08 |
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