Oxygen tank cart


FIG. 1 is a front elevational view of a oxygen tank cart showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a top perspective view thereof.

Referenced Cited
U.S. Patent Documents
D242537 November 1976 Marcell
D252746 August 28, 1979 Ek
4179132 December 18, 1979 Rich
Foreign Patent Documents
875621 August 1961 GBX
Patent History
Patent number: D331303
Type: Grant
Filed: Jan 30, 1991
Date of Patent: Nov 24, 1992
Inventor: Dana L. Dunn (Fort Collins, CO)
Primary Examiner: Kay H. Chin
Attorney: Leon Gilden
Application Number: 7/648,420