Document Type and Number:
Japanese Patent JPS52138423
Kind Code:
U
Application Number:
JP4593176U
Publication Date:
October 20, 1977
Filing Date:
April 13, 1976
Export Citation:
International Classes:
F17C13/02; F17C9/00; F17C13/12; (IPC1-7): F17C13/02; F17C13/12