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Inventor
GEBALD GEORG
DE
3 patents
Patents
3 patents
US4722001A
Jan 26, 1988
Self-propelled inspection vehicle
KRAFTWERK UNION AG
62 citations
91
US4657450A
Apr 14, 1987
Machining tool for pipes
KRAFTWERK UNION AG
12 citations
71
US4601133A
Jul 22, 1986
Manipulator head with grinding device for pipes or pipelines
KRAFTWERK UNION AG
19 citations
69