Yashirou Koyano

Follow

Person

Shimotsuga-gun, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Column frame with opening preventive utensils
- Patent number 6,119,421
- Issue date Sep 19, 2000
- Polymer Shoukou Co., Ltd.
- Yashirou Koyano
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES