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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS5017004
Kind Code:
A
Application Number:
JP6868973A
Publication Date:
February 22, 1975
Filing Date:
June 20, 1973
Export Citation:
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International Classes:
E01C19/22; E01C19/23; E01C19/28; (IPC1-7): E01C19/23