Membership
Tour
Register
Log in
Hans-Jurgen John
Follow
Person
Hamburg, DE
People
Overview
Industries
Organizations
People
Information
Impact
Patents Grants
last 30 patents
Information
Patent Grant
Thrust pipe
Patent number
4,808,032
Issue date
Feb 28, 1989
Meyer & John GmbH & Co. Tief- und Rohrleitungsbau
Hans-Jurgen John
E21 - EARTH DRILLING MINING