Document Type and Number:
Japanese Patent JPH0231991
Kind Code:
U
Application Number:
JP11087288U
Publication Date:
February 28, 1990
Filing Date:
August 24, 1988
Export Citation:
International Classes:
F16L33/00; F16L33/20; F16L33/28; F16L35/00; (IPC1-7): F16L35/00; F16L33/00; F16L33/00; F16L33/20; F16L33/28
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