Heating unit for use in melting and keeping hydrocolloid cartridges in liquid form

- Belport Co., Inc.
Description

FIG. 1 is a front elevational view of the heating unit for use in melting and keeping hydrocolloid cartridges in liquid form showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof; and,

FIG. 5 is a top, front and right side perspective view thereof.

The rear and bottom of the design are flat and unornamented.

Referenced Cited
U.S. Patent Documents
3335459 August 1967 Tyrner
4713523 December 15, 1987 MacDonald
Patent History
Patent number: D332831
Type: Grant
Filed: Dec 31, 1990
Date of Patent: Jan 26, 1993
Assignee: Belport Co., Inc. (Camarillo, CA)
Inventor: Robert E. Burridge (Santa Barbara, CA)
Primary Examiner: Wallace R. Burke
Assistant Examiner: Lisa Lichtenstein
Attorney: Jack C. Munro
Application Number: 7/636,366
Classifications