Document Type and Number:
Japanese Patent JPS5217173
Kind Code:
Y2
Application Number:
JP12228972U
Publication Date:
April 18, 1977
Filing Date:
October 23, 1972
Export Citation:
International Classes:
F28F3/14; F28D3/02; F28F3/12; (IPC1-7): F28F3/12; F28D3/02