Percy Svensson

Follow

Person

Ronninge, SW

People

Patents Grantslast 30 patents

Information Patent Grant
Manufacture of cellular lightweight concrete slabs
- Patent number 4,083,908
- Issue date Apr 11, 1978
- Internationella Siporex Aktiebolaget
- Oystein Kalvenes
- B28 - WORKING CEMENT, CLAY, OR STONE