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Document Type and Number:
Japanese Patent JPH0457994
Kind Code:
B2
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Inventors:
NARITA TADASHI
Application Number:
JP23107587A
Publication Date:
September 16, 1992
Filing Date:
September 17, 1987
Export Citation:
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Assignee:
BOEICHO GIJUTSU KENKYU HONBUCHO
International Classes:
G01V7/00



 
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