Masahiko Sawa

Follow

Person

Kanagawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Card issuance apparatus with cancellation mode
- Patent number 4,877,946
- Issue date Oct 31, 1989
- Sony Corporation
- Makoto Ando
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Portable magnetic card reading and writing apparatus with verificat...
- Patent number 4,812,632
- Issue date Mar 14, 1989
- Sony Corporation
- Koichiro Kakinuma
- G06 - COMPUTING CALCULATING COUNTING