Document Type and Number:
Japanese Patent JPS5279586
Kind Code:
U
Application Number:
JP16781275U
Publication Date:
June 14, 1977
Filing Date:
December 11, 1975
Export Citation:
International Classes:
G04B13/00; G04B29/00; G04C23/06; H01H43/02; H01H43/10; (IPC1-7): H01H43/02; G04B29/00; G04C23/06