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Document Type and Number:
Japanese Patent JPS63130590
Kind Code:
U
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Application Number:
JP2072887U
Publication Date:
August 26, 1988
Filing Date:
February 17, 1987
Export Citation:
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International Classes:
E21D11/00; (IPC1-7): E21D11/00
Domestic Patent References:
JPS6014198U1985-01-30
JPS6140500U1986-03-14



 
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