Document Type and Number:
Japanese Patent JPS57113556
Kind Code:
U
Application Number:
JP6481U
Publication Date:
July 14, 1982
Filing Date:
January 05, 1981
Export Citation:
International Classes:
H04L25/02; H03K17/56; H03K17/78; H04L13/00; H04L69/40; (IPC1-7): H04L25/02; H03K17/56; H04L13/00