Tatsuro NAGAO

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Saitama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Telephone message recording device
- Patent number 5,187,734
- Issue date Feb 16, 1993
- Pioneer Electronic Corporation
- Tokihiro Takahashi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
DOORPHONE SYSTEM
- Publication number 20090239465
- Publication date Sep 24, 2009
- Pioneer Corporation
- Tatsuro NAGAO
- H04 - ELECTRIC COMMUNICATION TECHNIQUE