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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS4217161
Kind Code:
Y1
Application Number:
JP7051365U
Publication Date:
October 03, 1967
Filing Date:
August 28, 1965
Export Citation:
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International Classes:
E01F9/00; E01F9/582; E01F9/594; E01F9/615; E01F9/619; E01F9/654; E01F9/688; E01F9/70; (IPC1-7): E01F9/04