Shut-off device which can be inserted into a pipeline

Assignee

• Den Norske Stats Oljeselskap A.S.

Inventors

• Trond V. Johansen (3 patents)
• Ola Ruch (3 patents)
• Ludvig Naess (3 patents)
• Robert A. Weber (14 patents)
• Bernd Veenhoff (1 patents)
• Horst Porner (3 patents)
• Erwin Laurer (20 patents)
• Erich Strickroth (5 patents)
• Hans-Peter Schabert (20 patents)

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