Document Type and Number:
Japanese Patent JPH0451356
Kind Code:
U
Application Number:
JP9304890U
Publication Date:
April 30, 1992
Filing Date:
September 03, 1990
Export Citation:
International Classes:
G02C13/00; B04C3/00; B24B31/16; (IPC1-7): B24B31/16; B04C3/00; G02C13/00
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