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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS448858
Kind Code:
Y1
Application Number:
JP1479268U
Publication Date:
April 10, 1969
Filing Date:
February 28, 1968
Export Citation:
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International Classes:
G03B31/06; G11B31/00; (IPC1-7): G11B31/00



 
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