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Patent Searching and Data


Document Type and Number:
Japanese Patent JPH03115198
Kind Code:
U
Application Number:
JP10431590U
Publication Date:
November 27, 1991
Filing Date:
October 02, 1990
Export Citation:
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International Classes:
E21D9/13; E21D9/06; F04D3/02; (IPC1-7): E21D9/06; F04D3/02
Domestic Patent References:
JPS5598597A1980-07-26
JP57103393B