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Patent Searching and Data


Document Type and Number:
Japanese Patent JPH0320359
Kind Code:
Y2
Application Number:
JP9328583U
Publication Date:
May 01, 1991
Filing Date:
June 20, 1983
Export Citation:
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International Classes:
E02F3/36; E21B1/00; E21B1/26; F15B11/16; F15B11/17; (IPC1-7): E02F3/36



 
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