Document Type and Number:
Japanese Patent JPS62146131
Kind Code:
U
Application Number:
JP3485886U
Publication Date:
September 16, 1987
Filing Date:
March 11, 1986
Export Citation:
International Classes:
G03B27/54; G03B27/72; G03G15/04; G03G15/043; (IPC1-7): G03B27/54; G03B27/72; G03G15/04