Paul Helderle

Follow

Person

Paris, FR

People

Patents Grantslast 30 patents

Information Patent Grant
Mandrel to be inserted into a liquid circulation pipe and associate...
- Patent number 8,418,772
- Issue date Apr 16, 2013
- Geoservices Equipements
- François Millet
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

Information Patent Application
MANDREL TO BE INSERTED INTO A LIQUID CIRCULATION PIPE AND ASSOCIATE...
- Publication number 20100101806
- Publication date Apr 29, 2010
- Francois Millet
- E21 - EARTH DRILLING MINING