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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS4113809
Kind Code:
Y1
Application Number:
JP7470565U
Publication Date:
June 28, 1966
Filing Date:
September 13, 1965
Export Citation:
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International Classes:
G03B7/099; G03B7/0997; (IPC1-7): G03B7/00