Document Type and Number:
Japanese Patent JPS53138603
Kind Code:
U
Application Number:
JP4327477U
Publication Date:
November 02, 1978
Filing Date:
April 07, 1977
Export Citation:
International Classes:
F16B33/04; E21B17/042; F16B33/02; F16H25/20; F16H25/24; (IPC1-7): E21C15/00; F16B33/02; F16H25/20