Title:
STATUS CHANGE DETECTOR
Document Type and Number:
Japanese Patent JPS5698326
Kind Code:
A
Inventors:
CHIAKI TADASHI
Application Number:
JP8080A
Publication Date:
August 07, 1981
Filing Date:
January 07, 1980
Export Citation:
Assignee:
HITACHI LTD
HITACHI ENG CO LTD
HITACHI ENG CO LTD
International Classes:
H02H3/04; H02J13/00; (IPC1-7): H02H3/04; H02J13/00