Protection or supervision of installations (arrangements for protecting foundations E02D31/00; protecting pipes from damage or internal or external wear F16L57/00, against corrosion and scale F16L58/00; investigation of the fluid-tightness of structures G01M3/00)

Child Classifications

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• F17D 5/005
• F17D 5/02 Preventing, monitoring, or locating loss
• F17D 5/08 Protection of installations or persons from the effects of high voltage induced in the pipe-line (emergency protective circuit arrangements H02H)