Document Type and Number:
Japanese Patent JPS4810440
Kind Code:
U
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Application Number:
JP5192571U
Publication Date:
February 05, 1973
Filing Date:
June 17, 1971
Export Citation:
International Classes:
G03B7/081; G03B7/00; G03B7/083; G03B9/62; (IPC1-7): G03B7/08