Yoshihiro Saito

Follow

Person

Machida, JA

People

Patents Grantslast 30 patents

Information Patent Grant
Electret transducer having an electret of inorganic insulating mate...
- Patent number 3,946,422
- Issue date Mar 23, 1976
- Sony Corporation
- Hajime Yagi
- H04 - ELECTRIC COMMUNICATION TECHNIQUE