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Document Type and Number:
Japanese Patent JPH0363053
Kind Code:
B2
Inventors:
TSUKADA EIICHI
HORIKAWA HIROSHI
Application Number:
JP8837978A
Publication Date:
September 27, 1991
Filing Date:
July 21, 1978
Export Citation:
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Assignee:
NIPPON TELEGRAPH & TELEPHONE
International Classes:
G03B21/11; G03B23/00



 
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