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Patent Searching and Data

Document Type and Number:
Japanese Patent JPS56134978
Kind Code:
Application Number:
Publication Date:
October 13, 1981
Filing Date:
March 08, 1980
Export Citation:
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International Classes:
E03F5/20; E03F5/04; E03F5/08; E04D13/04; (IPC1-7): E03F5/04; E04D13/04

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