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Patent Searching and Data


Document Type and Number:
Japanese Patent JPH0217716
Kind Code:
U
Application Number:
JP9584588U
Publication Date:
February 06, 1990
Filing Date:
July 20, 1988
Export Citation:
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International Classes:
G02C9/00; (IPC1-7): G02C9/00
Domestic Patent References:
JPS4931891U1974-03-19
JPS6129817A1986-02-10
JP14017166Y1
JPH024133U1990-01-11



 
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