Electric heater

- Rakennusvalmiste Oy
Description

FIG. 1 is a front elevational view of an electric heater, showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a side elevational view thereof;

FIG. 4 is an elevational view of the opposite side thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a front elevational view of a second embodiment of an electric heater;

FIG. 8 is a rear elevational view thereof;

FIG. 9 is a side elevational view thereof;

FIG. 10 is an elevational view of the opposite side thereof;

FIG. 11 is a top plan view thereof;

FIG. 12 is a bottom plan view thereof;

FIG. 13 is a front elevational view of a third embodiment of an electric heater;

FIG. 14 is a rear elevational view thereof;

FIG. 15 is a side elevational view thereof;

FIG. 16 is an elevational view of the opposite side thereof;

FIG. 17 is a top plan view thereof;

FIG. 18 is a bottom plan view thereof;

FIG. 19 is a front elevational view of a fourth embodiment of an electric heater;

FIG. 20 is a rear elevational view thereof;

FIG. 21 is a side elevational view thereof;

FIG. 22 is an elevational view of the opposite side thereof;

FIG. 23 is a top plan view thereof;

FIG. 24 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D178926 October 1956 McElgin
D195447 June 1963 Ware
3310652 March 1967 Williams, Jr.
3408480 October 1968 Peltak et al.
3596058 July 1971 Steiner
4227068 October 7, 1980 Carter
4392048 July 5, 1983 Carter
Patent History
Patent number: D287750
Type: Grant
Filed: Apr 24, 1984
Date of Patent: Jan 13, 1987
Assignee: Rakennusvalmiste Oy
Inventor: Ilkka Hamalainen (Helsinki)
Primary Examiner: Catherine E. Kemper
Law Firm: Andrus, Sceales, Starke & Sawall
Application Number: 6/603,447
Classifications
Current U.S. Class: D23/93; D23/110; D23/113