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Document Type and Number:
Japanese Patent JPS5413930
Kind Code:
Y2
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Application Number:
JP6846474U
Publication Date:
June 12, 1979
Filing Date:
June 14, 1974
Export Citation:
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International Classes:
G03B23/02; G11B23/04; G11B23/08; G11B23/087; (IPC1-7): G11B23/04



 
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