Document Type and Number:
Japanese Patent JPS57133721
Kind Code:
U
Application Number:
JP2129781U
Publication Date:
August 20, 1982
Filing Date:
February 14, 1981
Export Citation:
International Classes:
E06B3/72; E04B1/64; E04C2/38; (IPC1-7): E04C2/38; E04B1/64; E06B3/72