DEVICE RECORDING EARTHQUAKES Russian patent published in 1998 - IPC

Abstract RU 2105325 C1

FIELD: warning of population of earthquakes. SUBSTANCE: device recording earthquakes has vibration sensor, unit of acoustic signals, acoustic radiator coupled in series, power supply source, switch, by-pass capacitor, resistor and capacitor. EFFECT: improved reliability of device. 3 cl, 4 dwg

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RU 2 105 325 C1

Authors

Efremov Vladimir Anatol'Evich

Dates

1998-02-20—Published

1996-12-16—Filed