Document Type and Number:
Japanese Patent JPS5432137
Kind Code:
U
Application Number:
JP10503177U
Publication Date:
March 02, 1979
Filing Date:
August 05, 1977
Export Citation:
International Classes:
G03B7/01; G03B17/00; G03B17/02; H01H13/02; (IPC1-7): G03B7/00