Document Type and Number:
Japanese Patent JPS5044390
Kind Code:
A
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| JPS61174862 | SWITCH DETECTING CIRCUIT |
Application Number:
JP9560273A
Publication Date:
April 21, 1975
Filing Date:
August 24, 1973
Export Citation:
International Classes:
H04Q9/12; H04L27/06; H04Q9/08; (IPC1-7): H04Q9/08