Document Type and Number:
Japanese Patent JPS63197989
Kind Code:
U
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Application Number:
JP8504387U
Publication Date:
December 20, 1988
Filing Date:
May 30, 1987
Export Citation:
International Classes:
F16L39/00; F16L37/00; F28D7/06; F28D7/16; F28F9/02; (IPC1-7): F28F9/02; F16L39/00; F28D7/06
Domestic Patent References:
| JP38014443A |