Shingo Nagashina

Follow

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Method for injecting lubricant and filler in the pipe-jacking method
- Patent number 5,484,232
- Issue date Jan 16, 1996
- Tokyo Gas Company Ltd.
- Mitsutoshi Hayashi
- E21 - EARTH DRILLING MINING