Document Type and Number:
Japanese Patent JPS5269901
Kind Code:
U
Application Number:
JP15755875U
Publication Date:
May 24, 1977
Filing Date:
November 20, 1975
Export Citation:
International Classes:
G10K11/16; F24F3/00; F24F13/06; G10K11/00; (IPC1-7): G10K11/00; F24F3/00