BY ELECTROMAGNETIC WALVES CONNECTED CONTROL CIRCUIT AND OSCILLATOR FOR MEASURING WAVE PROPAGATION TIME IN PARTICULAR PROPAGATION TIME OF SEISMIC VIBRATIONS
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Main Author | |
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Format | Patent |
Language | English Hungarian |
Published |
28.11.1977
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Subjects | |
Online Access | Get full text |
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Bibliography: | Application Number: HU1974MA02627 |
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