Document Type and Number:
Japanese Patent JPS53157735
Kind Code:
U
Application Number:
JP6294177U
Publication Date:
December 11, 1978
Filing Date:
May 17, 1977
Export Citation:
International Classes:
G03B27/52; G03B27/32; G03G15/04; G03G15/043; G03G21/00; H01H9/54; (IPC1-7): G03G15/04; G03B27/32; H01H9/54