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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS6315419
Kind Code:
Y2
Application Number:
JP15141882U
Publication Date:
April 28, 1988
Filing Date:
October 07, 1982
Export Citation:
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International Classes:
E02B9/06; E02F5/10; E21B3/02; E21B3/025; E21B10/44; F16L1/038; (IPC1-7): E21B3/02