Patent · US Expired

Obstetrical filter and trap

US4957629A · kind A · utility

12Cited by

6References

11Claims

0Family size

Inventors

Lawrence M. Smith · Lewisville, US
Emily Smith · Villa Park, US

Key dates

Filing date	Nov 28, 1988
Grant date	Sep 18, 1990
Priority date	—
Expiry date	Nov 28, 2008

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61M2202/0494
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A filter for obstetrical fluids and particulate matter having an enclosure containing a first chamber and a second chamber is disclosed. The first chamber has a solid partition forming first and second cavities in the first chamber. The first cavity has an inlet and the second cavity has an outlet. The second chamber contains a filter and the edge of the partition is pressed against the surface of the filter.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.