Manual vacuum filtration container for liquid specimens

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Description

FIG. 1 is a front perspective view of a manual vacuum filtration container showing my new design;

FIG. 2 is a front elevational view thereof, the rear being a mirror image;

FIG. 3 is a top plan view thereof, and;

FIG. 4 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D181454 November 1957 Becker
D270947 October 11, 1983 Mehra et al.
D287639 January 6, 1987 Moore et al.
2896787 July 1959 Roman
3386585 June 1968 Weyand et al.
4602995 July 29, 1986 Cassaday et al.
4792398 December 20, 1988 Klein
Patent History
Patent number: D312862
Type: Grant
Filed: Oct 28, 1987
Date of Patent: Dec 11, 1990
Assignee: Marion Laboratories, Inc. (Kansas City, MO)
Inventor: Vernon W. Klein (Kansas City, MO)
Primary Examiner: Susan J. Lucas
Assistant Examiner: M. H. Tung
Attorney: Robert S. Beiser
Application Number: 7/113,729
Classifications
Current U.S. Class: Filter Or Strainer (2) (D23/209)