Membership
Tour
Register
Log in
Angelo Cassone
Follow
Person
Herten, DT
People
Overview
Industries
Organizations
People
Information
Impact
Patents Grants
last 30 patents
Information
Patent Grant
Excavation roof support
Patent number
3,990,251
Issue date
Nov 9, 1976
Klockner-Werke AG
Karl Heinz Wehner
E21 - EARTH DRILLING MINING