Plastic hydrometer
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United States of America Patent
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-
Feb 19, 1991
Grant Date -
N/A
app pub date -
May 19, 1989
filing date -
May 19, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A plastic hydrometer of the constant mass variable displacement type. The hydrometer includes a separate bulbous section, stem and cap. The bulbous section is a single piece molded part having an upper end which mates with the lower end of the extruded tube.
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