Bjorn O. Thoresen

Follow

Person

3500 Honefoss, NO

People

Patents Grantslast 30 patents

Information Patent Grant
Adjustable mold for casting a concrete stairway
- Patent number 5,133,530
- Issue date Jul 28, 1992
- Bjorn O. Thoresen
- B28 - WORKING CEMENT, CLAY, OR STONE