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Document Type and Number:
Japanese Patent JPS6367644
Kind Code:
B2
Abstract:
A frost sensor for detecting the presence of frost uses an acoustic device having an acoustic transmitting medium made of a magnetostrictive material, particularly an amorphous metal alloy, of a ribbon shape, as means for detecting the frost.

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Inventors:
GOTO NORIO
Application Number:
JP8509580A
Publication Date:
December 27, 1988
Filing Date:
June 25, 1980
Export Citation:
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Assignee:
HITACHI SEISAKUSHO KK
HITACHI KINZOKU KK
International Classes:
G01N5/02; F25D21/02; G01H11/04; G01N29/12; G08B19/02



 
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