Document Type and Number:
Japanese Patent JPS4738257
Kind Code:
U
Application Number:
JP4171771U
Publication Date:
December 27, 1972
Filing Date:
May 21, 1971
Export Citation:
International Classes:
F16B43/02; E04B1/41; E21D20/00; E21D21/00; F16B35/04; (IPC1-7): E21D21/00; E04B1/41; F16B35/04