Koshiro Aoyagi

Follow

Person

Kitakyushu, JA

People

Patents Grantslast 30 patents

Information Patent Grant
Metal extrusion process with high reduction
- Patent number 4,074,557
- Issue date Feb 21, 1978
- Nippon Steel Corporation
- Samon Yanagimoto
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...