Automatic temperature sensing electric heater

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Description

FIG. 1 is a top front perspective view of an automatic temperature sensing electric heater, showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a side elevational view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a top plan view thereof.

Referenced Cited
U.S. Patent Documents
D113294 February 1939 Teague
D246254 November 1, 1977 Schade
D257059 September 23, 1980 Schade
Other references
  • Edison Heater Catalog ED-33-12/78, p. 3, Models 324029, 324031, 324035.
Patent History
Patent number: D275029
Type: Grant
Filed: Jun 2, 1980
Date of Patent: Aug 7, 1984
Assignee: National Presto Industries, Inc. (Eau Claire, WI)
Inventors: Melvin H. Boldt (Glenview, IL), Thurber H. Morrison (Evanston, IL), James P. Stevens (Oak Park, IL)
Primary Examiner: Catherine E. Kemper
Law Firm: Merchant, Gould, Smith, Edell, Welter & Schmidt
Application Number: 6/155,106
Classifications
Current U.S. Class: D23/122