Document Type and Number:
Japanese Patent JPS5047440
Kind Code:
U
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Application Number:
JP10071873U
Publication Date:
May 12, 1975
Filing Date:
August 28, 1973
Export Citation:
International Classes:
G03B21/132; G03B21/00; G03B33/06; G08B3/00; (IPC1-7): G03B21/00; G08B3/00