Test instruments for measuring properties of liquids

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Description

FIG. 1 is a perspective view of a test instrument for measuring properties of liquids showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right hand side elevational view thereof;

FIG. 5 is a left hand side elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a perspective view of a test instrument for measuring properties of liquids showing a second embodiment of my new design having a slightly modified control panel on the front face thereof; and,

FIG. 9 is a front elevational view thereof.

Referenced Cited
U.S. Patent Documents
D346123 April 19, 1994 Narayanan
D354921 January 31, 1995 Narayanan
Other references
  • Cole-Parmer Catalog 1999-2000; pp. 600, 603-604, 606, 608-609, 612-613 and 615.
Patent History
Patent number: D416821
Type: Grant
Filed: Oct 6, 1998
Date of Patent: Nov 23, 1999
Assignee: Eutech Instruments Pte. Ltd. (Singapore)
Inventor: Bhaskar Narayanan (HJ Heights)
Primary Examiner: Antoine Duval Davis
Law Firm: Fitch, Even, Tabin & Flannery
Application Number: 0/94,591
Classifications
Current U.S. Class: Chemical (12) (D10/81); Provided With Handle, Or Hand-held (D10/78)
International Classification: 1004;