Document Type and Number:
Japanese Patent JPS52139666
Kind Code:
U
Application Number:
JP4735476U
Publication Date:
October 22, 1977
Filing Date:
April 17, 1976
Export Citation:
International Classes:
E03F9/00; E03C1/182; E03C1/304; (IPC1-7): E03C1/304; E03F9/00