Document Type and Number:
Japanese Patent JPS49130745
Kind Code:
A
Application Number:
JP4339573A
Publication Date:
December 14, 1974
Filing Date:
April 16, 1973
Export Citation:
International Classes:
C03C17/245; G02B7/00; H02P6/06; H02P6/08; H02P6/18; H02P6/182