Document Type and Number:
Japanese Patent JPH0321891
Kind Code:
Y2
Application Number:
JP6839886U
Publication Date:
May 13, 1991
Filing Date:
May 07, 1986
Export Citation:
International Classes:
B24B31/033; B24B31/12; (IPC1-7): B24B31/12; B24B31/033
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