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Document Type and Number:
Japanese Patent JPS56155864
Kind Code:
U
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Application Number:
JP5510380U
Publication Date:
November 20, 1981
Filing Date:
April 21, 1980
Export Citation:
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International Classes:
G09B19/02; A63B5/00; A63B67/00; G09B19/00; (IPC1-7): A63B67/00; A63B5/00; G09B19/00



 
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