Document Type and Number:
Japanese Patent JPS5760680
Kind Code:
B2
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Inventors:
OSADA TAKEO
Application Number:
JP3665578A
Publication Date:
December 21, 1982
Filing Date:
March 31, 1978
Export Citation:
Assignee:
HITACHI LTD
International Classes:
G01D5/42; F15B3/00; F15B7/10; G08C23/00; G08C25/00