Filter units
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United States of America Patent
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May 4, 1993
Grant Date -
N/A
app pub date -
Feb 26, 1990
filing date -
Aug 27, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An assay filter unit where the filter of the unit is sealed into the body of the unit to prevent any passage of material to be assayed round the edge of the filter but is removable by breaking out a filter support grid along a predetermined line of weakness, together with the filter, for assay of material retained on the filter.
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