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Patent Searching and Data


Document Type and Number:
Japanese Patent JPS5680934
Kind Code:
U
Application Number:
JP16467179U
Publication Date:
June 30, 1981
Filing Date:
November 28, 1979
Export Citation:
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International Classes:
B21J9/06; B21J5/08; B21J13/02; B21K21/12; (IPC1-7): B21J5/08; B21K21/12