Document Type and Number:
Japanese Patent JPS57187883
Kind Code:
U
Application Number:
JP7256781U
Publication Date:
November 29, 1982
Filing Date:
May 21, 1981
Export Citation:
International Classes:
E03F5/04; E02B5/00; E02B5/02; E02B11/00; (IPC1-7): E03F5/04; E02B11/00