Document Type and Number:
Japanese Patent JPS5353028
Kind Code:
Y2
Application Number:
JP13074073U
Publication Date:
December 18, 1978
Filing Date:
November 14, 1973
Export Citation:
International Classes:
E04B1/41; E21D20/00; E21D21/00; F16B35/04; (IPC1-7): F16B35/04