Document Type and Number:
Japanese Patent JPS5734495
Kind Code:
Y2
Application Number:
JP16713177U
Publication Date:
July 30, 1982
Filing Date:
December 12, 1977
Export Citation:
International Classes:
G03B15/02; F21V21/14; F21V21/34; (IPC1-7): G03B15/02; F21V21/14