Cannula for withdrawing a test sample from a test tube

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Description

FIG. 1 is a top, left side perspective view of a cannula for withdrawing a test sample from a test tube, showing my new design, the cannula being generally symmetrical about its axis; and

FIG. 2 is a rear, bottom left side perspective view thereof.

Referenced Cited
U.S. Patent Documents
4368738 January 18, 1983 Tersteegen et al.
4653512 March 31, 1987 Losada
4690153 September 1, 1987 Losada et al.
4692156 September 8, 1987 Haller
Patent History
Patent number: D310569
Type: Grant
Filed: Aug 10, 1987
Date of Patent: Sep 11, 1990
Inventor: Bengt-Inge Broden (S-532 00 Skara)
Primary Examiner: A. Hugo Word
Assistant Examiner: Stella M. Reid
Law Firm: Sughrue, Mion, Zinn, Macpeak & Seas
Application Number: 7/83,988
Classifications
Current U.S. Class: D24/51