发明授权
US3653017A Liquid level indicator systems 失效
液位指示器系统

Liquid level indicator systems
摘要:
A liquid level indicator system for indicating the level of a conductive liquid in a reservoir includes a probe, at least a portion of the probe which is immersed in the liquid when the liquid level is at or above a predetermined level being coated with a layer of material which is absorbent to the conductive liquid so that a true indication of the liquid level in the reservoir is obtained.
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