Instrument for testing liquid samples

- Palintest Ltd.
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Description

FIG. 1 is a front perspective view of an instrument for testing liquid samples showing my new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a rear perspective view thereof;

FIG. 4 is a rear elevational view thereof; and,

FIG. 5 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D186271 October 1959 Marks
D197404 January 1964 Frank
D226428 March 1973 Davis
D318245 July 16, 1991 Sierra et al.
D321488 November 12, 1991 Sierra et al.
3176577 April 1965 Frank
4180009 December 25, 1979 Voss et al.
4871258 October 3, 1989 Herpichboehm et al.
4984895 January 15, 1991 Kobayashi et al.
5011290 April 30, 1991 Terada et al.
5083868 January 28, 1992 Anderson
Foreign Patent Documents
9101179 February 1991 WOX
Other references
  • American Scientific Products; p. 1018, Item W2555-1, Pocket Comparator.
Patent History
Patent number: D333630
Type: Grant
Filed: May 22, 1990
Date of Patent: Mar 2, 1993
Assignee: Palintest Ltd. (Tyne & Wear)
Inventor: Colin E. Marks (Tyne & Wear)
Primary Examiner: A. Hugo Word
Assistant Examiner: Celia A. Murphy
Law Firm: Rodman & Rodman
Application Number: 7/527,169