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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS5322404
Kind Code:
Y2
Application Number:
JP8850474U
Publication Date:
June 10, 1978
Filing Date:
July 23, 1974
Export Citation:
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International Classes:
E02D5/80; E21B10/32; (IPC1-7): E02D5/80; E02D17/148