Document Type and Number:
Japanese Patent JPS5012447
Kind Code:
B1
Application Number:
JP6022968A
Publication Date:
May 12, 1975
Filing Date:
August 24, 1968
Export Citation:
International Classes:
C04B41/85; C04B35/14; C04B35/84; (IPC1-7): C04B35/14; C04B35/84