Document Type and Number:
Japanese Patent JPS5255651
Kind Code:
U
Application Number:
JP14248775U
Publication Date:
April 21, 1977
Filing Date:
October 21, 1975
Export Citation:
International Classes:
G10K11/16; F24F7/02; F24F7/06; G10K11/00; (IPC1-7): F24F7/06; G10K11/00