Vacuum flask

Description

FIG. 1 is a front elevational view of a vacuum flask showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a top plan elevational view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top perspective view thereof.

Referenced Cited
U.S. Patent Documents
D48560 February 1916 Luttringhaus
D79915 November 1929 Davis et al.
D189939 March 1961 Burton
Foreign Patent Documents
1047931 November 1966 GBX
Patent History
Patent number: D300709
Type: Grant
Filed: Feb 18, 1986
Date of Patent: Apr 18, 1989
Inventor: Jeng C. Chen (Taipei)
Primary Examiner: Winifred E. Herrmann
Attorney: Bernard R. Gans
Application Number: 6/833,765
Classifications
Current U.S. Class: D/7321; D/7319