Vacuum flask

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Description

FIG. 1 is a top, front, and right side perspective view of a vacuum flask showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof, the undisclosed left side is a mirror image thereof;

FIG. 5 is a top plan view thereof; and

FIG. 6 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D97979 December 1935 Ackerman
D200978 April 1965 Seltz
D216370 December 1969 Tsoo-Hing et al.
D247547 March 21, 1978 Tuzee
3371807 March 1968 Clouser et al.
Patent History
Patent number: D301296
Type: Grant
Filed: Nov 21, 1985
Date of Patent: May 30, 1989
Inventor: Shin Rong Hsu (Taipei)
Primary Examiner: Winifred E. Herrmann
Application Number: 6/805,934
Classifications
Current U.S. Class: D/7317; D/7318