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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS5253122
Kind Code:
Y2
Application Number:
JP6995372U
Publication Date:
December 02, 1977
Filing Date:
June 15, 1972
Export Citation:
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International Classes:
E02F3/76; E01C19/23; E01C19/28; E01C19/30; E02F9/00; (IPC1-7): E02F3/76; E01C19/23