Document Type and Number:
Japanese Patent JPS5019256
Kind Code:
Y1
Application Number:
JP11633769U
Publication Date:
June 11, 1975
Filing Date:
December 09, 1969
Export Citation:
International Classes:
E04B1/80; B32B5/18; E04B1/94; E04C2/26; F16L59/02; F16L59/08; (IPC1-7): F16L59/02; E04C2/26; F16L59/08