Document Type and Number:
Japanese Patent JPS63198604
Kind Code:
U
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Application Number:
JP8842987U
Publication Date:
December 21, 1988
Filing Date:
June 08, 1987
Export Citation:
International Classes:
E01C11/22; E03F5/046; (IPC1-7): E01C11/22; E03F5/046
Domestic Patent References:
JPS4936446U | 1974-03-30 | |||
JPS544279U | 1979-01-12 |