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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS5335530
Kind Code:
Y2
Application Number:
JP1666272U
Publication Date:
August 31, 1978
Filing Date:
February 12, 1972
Export Citation:
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International Classes:
E02D17/20; E01F7/04; E04H17/04; E21D20/00; E21D21/00; (IPC1-7): E21D21/00; E02D17/20



 
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