Maxman AG

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Chur, CH

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Patents Grantslast 30 patents

Information Patent Grant
System for control of speech direction in duplex telephone circuits
- Patent number 4,052,562
- Issue date Oct 4, 1977
- Maxman AG
- Bjorn Andersen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
System for addressed timemultiplexed telecommunication
- Patent number 3,987,249
- Issue date Oct 19, 1976
- Maxman AG
- Bjorn Andersen
- H04 - ELECTRIC COMMUNICATION TECHNIQUE