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Publication numberUSD252641 S
Publication typeGrant
Application numberUS 05/766,914
Publication dateAug 14, 1979
Filing dateFeb 9, 1977
Publication number05766914, 766914, US D252641 S, US D252641S, US-S-D252641, USD252641 S, USD252641S
InventorsRalph M. Lazar
Original AssigneeBroan Manufacturing Co., Inc.
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Heat recirculator
US D252641 S
Abstract  available in
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  1. The ornamental design for a heat recirculator, as shown.

FIG. 1 is a perspective view of a heat recirculator showing my new design.

FIG. 2 is a front view thereof.

FIG. 3 is a side view thereof.

FIG. 4 is a top plan view thereof.

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US7591301Sep 13, 2005Sep 22, 2009Catacel Corp.Low-cost high-temperature heat exchanger
US7594326Sep 13, 2005Sep 29, 2009Catacel Corp.Method for making a low-cost high-temperature heat exchanger
US8047272Oct 8, 2007Nov 1, 2011Catacel Corp.High-temperature heat exchanger
US20070056164 *Sep 13, 2005Mar 15, 2007Catacel CorporationMethod for making a low-cost high-temperature heat exchanger
US20070056717 *Sep 13, 2005Mar 15, 2007Catacel CorporationLow-cost high-temperature heat exchanger
US20080072425 *Oct 8, 2007Mar 27, 2008Catacel Corp.High-temperature heat exchanger
USD789512 *May 20, 2015Jun 13, 2017Eddie A. CrossDuctwork
U.S. ClassificationD23/370, 454/231