Hans Lehmann

Follow

Person

Goslar, DE

People

Patents Grantslast 30 patents

Information Patent Grant
Aggregate for concrete and concrete composition containing same
- Patent number 4,134,774
- Issue date Jan 16, 1979
- STEAG Aktiengesellschaft
- Dieter Heese
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES