Vacuum flask

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Description

FIG. 1 is a perspective view of a vacuum flask showing our new design thereof;

FIG. 2 is a front elevational view and the rear side elevational view being a mirror image 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; and,

FIG. 6 is a bottom plan view thereof.

Claims

The ornamental design for vacuum flask, as shown and described.

Referenced Cited
U.S. Patent Documents
D195598 July 1963 Bernadotta
D218354 August 1970 Kikuchi
D326791 June 9, 1992 Rixen
D343983 February 8, 1994 Tardif
D415934 November 2, 1999 Wallays
Patent History
Patent number: D450541
Type: Grant
Filed: Jun 16, 1998
Date of Patent: Nov 20, 2001
Inventor: Frank T. H. Huang (Taipei)
Primary Examiner: Terry A. Wallace
Attorney, Agent or Law Firm: Bacon & Thomas, PLLC
Application Number: 29/089,470
Classifications
Current U.S. Class: D7/608
International Classification: 0701;