Temperature responsive control unit for windows of greenhouses and the like

- Thermoforce Limited
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Description

FIG. 1 is a perspective view from above and one side;

FIG. 2 is an elevation of the other side;

FIG. 3 is an underneath view;

FIG. 4 is an elevation of one end;

FIG. 5 is an elevation of other end.

Referenced Cited
U.S. Patent Documents
D204187 March 1966 Schulz
3729770 May 1973 Lasier
4200954 May 6, 1980 McCabe
Patent History
Patent number: D267311
Type: Grant
Filed: Oct 22, 1980
Date of Patent: Dec 21, 1982
Assignee: Thermoforce Limited (Cockersmouth)
Inventor: Albert Cole (Keswick)
Primary Examiner: A. Hugo Word
Law Firm: Shoemaker and Mattare, Ltd.
Application Number: 6/199,634
Classifications
Current U.S. Class: D/8330
International Classification: D0809;