Ryoichi Hatakeyama

Follow

Person

Urawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Flexible expansion pipe coupling
- Patent number 4,838,582
- Issue date Jun 13, 1989
- The Victaulic Company of Japan, Ltd.
- Ryoichi Hatakeyama
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...