Document Type and Number:
Japanese Patent JPH0237034
Kind Code:
Y2
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Application Number:
JP2050681U
Publication Date:
October 08, 1990
Filing Date:
February 18, 1981
Export Citation:
International Classes:
F16L27/12; C21C5/46; F16L27/08; F16L37/00; F16L39/04; (IPC1-7): F16L39/04
Next Patent: JPH0237035