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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS5542749
Kind Code:
B2
Application Number:
JP8234571A
Publication Date:
November 01, 1980
Filing Date:
October 18, 1971
Export Citation:
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International Classes:
G03F7/06; G03F7/00; (IPC1-7): G03F7/02; G03F7/06



 
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