Constant temperature circulator
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The broken lines shown in the drawing are for the purpose of illustrating portions of the article and form no part of the claimed design.
Claims
The ornamental design for a constant temperature circulator, as shown and described herein.
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Type: Grant
Filed: Feb 1, 2012
Date of Patent: Nov 12, 2013
Assignee: Preston Industries, Inc. (Niles, IL)
Inventor: Philip Preston (Northfield, IL)
Primary Examiner: T. Chase Nelson
Assistant Examiner: Ania Aman
Application Number: 29/412,299