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Priority to JP1988115183UpriorityCriticalpatent/JPH0620977Y2/ja
Publication of JPH0237326UpublicationCriticalpatent/JPH0237326U/ja
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Publication of JPH0620977Y2publicationCriticalpatent/JPH0620977Y2/ja
System and method for determining the level of a substance in a container based on measurement of resonance from an acoustic circuit that includes unfilled space within the container that changes size as substance is added or removed from the container
System and method for determining the level of a substance in a container based on measurement of resonance from an acoustic circuit that includes unfilled space within the container that changes size as substance is added or removed from the container