Document Type and Number:
Japanese Patent JPS52136955
Kind Code:
U
Application Number:
JP4504776U
Publication Date:
October 18, 1977
Filing Date:
April 13, 1976
Export Citation:
International Classes:
B28B7/30; E04B1/41; E04G17/02; (IPC1-7): B28B7/30; E04B1/41