Robert Ludwigson

Follow

Person

Goteborg, SE

People

Patents Grantslast 30 patents

Information Patent Grant
Drilling device
- Patent number 7,628,225
- Issue date Dec 8, 2009
- GVA Consultants AB
- Inge Petersson
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
DRILLING DERRICK FOR OFFSHORE DRILLING INCORPORATING A STRESSED-SKI...
- Publication number 20140130440
- Publication date May 15, 2014
- Bassoe Technology AB
- Robert Ludwigson
- E21 - EARTH DRILLING MINING
Information Patent Application
DRILLING DEVICE
- Publication number 20090057011
- Publication date Mar 5, 2009
- INGE PETERSSON
- E21 - EARTH DRILLING MINING