Bochumer Eisenhutte Heintzmann GmbH & Co. HG

Follow

Organization

US

Organizations

Please log in for detailed analytics

Patents Grantslast 30 patents

Information Patent Grant
Method of separating the upper coal in seams
- Patent number 4,798,417
- Issue date Jan 17, 1989
- Bochumer Eisenhutte Heintzmann GmbH & Co. HG
- Gunter Blumenthal
- E21 - EARTH DRILLING MINING