Masami Koizumi

Follow

Person

Yokohama, JA

People

Patents Grantslast 30 patents

Information Patent Grant
Method of and device for testing movable magnetic heads for ability...
- Patent number 3,962,724
- Issue date Jun 8, 1976
- Ricoh Co., Ltd.
- Masami Koizumi
- G11 - INFORMATION STORAGE