Core sample tube

Description

FIG. 1 is a front elevational view of a core sample tube showing my new design, the rear elevational view being a mirror image;

FIG. 2 is a top plan view;

FIG. 3 is a bottom plan view;

FIG. 4 is a left side elevational view; and

FIG. 5 is a right side elevational view thereof.

Referenced Cited
U.S. Patent Documents
D239820 May 1976 Retrum
D288180 February 10, 1987 Shrull
408223 August 1889 Draper
3075588 January 1963 Mitchell
3515230 June 1970 Tomaine
3596719 August 1971 Koziski
3878906 April 1975 Guest
4117896 October 3, 1978 Weber
4252200 February 24, 1981 Peterson
4556114 December 3, 1985 Ryan
4576498 March 18, 1986 Rassieur
4587857 May 13, 1986 Bush
4776719 October 11, 1988 Kreider
Patent History
Patent number: D310491
Type: Grant
Filed: Jun 26, 1987
Date of Patent: Sep 11, 1990
Inventor: Dale Mitchell (Boynton Beach, FL)
Primary Examiner: Nelson C. Holtje
Assistant Examiner: Antoine D. Davis
Law Firm: Malin, Haley, McHale, DiMaggio & Crosby
Application Number: 7/67,460