Svein Jonsson

Follow

Person

Oslo, NO

People

Patents Grantslast 30 patents

Information Patent Grant
Seal for joint, and method of installing same seal
- Patent number 5,290,045
- Issue date Mar 1, 1994
- C. I. Kasei Co., Ltd.
- Michiyoshi Terauchi
- E03 - WATER SUPPLY SEWERAGE