Document Type and Number:
Japanese Patent JPS55158481
Kind Code:
U
Application Number:
JP5506679U
Publication Date:
November 14, 1980
Filing Date:
April 24, 1979
Export Citation:
International Classes:
C21B9/02; C21B9/10; F28D17/00; F28D20/00; F28F23/00; (IPC1-7): F28D17/00; C21B9/10; F28F23/00