Document Type and Number:
Japanese Patent JPS5010334
Kind Code:
B1
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Application Number:
JP7294769A
Publication Date:
April 21, 1975
Filing Date:
September 13, 1969
Export Citation:
International Classes:
C03B18/12; C03B18/02; C03B18/14; C03C17/06; C03C21/00; (IPC1-7): C03C17/06; C03B18/02