Masayuki Tsushima

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Chofu, JP

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Patents Grantslast 30 patents

Information Patent Grant
Automatic telephone answering machine with ring signal responsive m...
- Patent number 5,063,589
- Issue date Nov 5, 1991
- Tandy Electronics Japan, Ltd.
- Masayuki Tsushima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Recorder control apparatus for automatic telephone answering system
- Patent number 5,010,567
- Issue date Apr 23, 1991
- Tandy Electronics Japan Ltd.
- Masayuki Tsushima
- H04 - ELECTRIC COMMUNICATION TECHNIQUE