Document Type and Number:
Japanese Patent JPS52156486
Kind Code:
U
Application Number:
JP6562876U
Publication Date:
November 28, 1977
Filing Date:
May 23, 1976
Export Citation:
International Classes:
G09F13/16; E01F9/00; E01F9/608; E01F9/619; (IPC1-7): E01F9/02; G09F13/16