Patent
   RE49521
Priority
Jan 29 2020
Filed
Jun 10 2021
Issued
May 09 2023
Expiry
Jan 29 2040
Assg.orig
Entity
Large
0
9
currently ok
0. The ornamental design for a heat exchanger, as shown and described.

FIG. 1 is an isometric view of the heat exchanger of our invention;

FIG. 2 is a front view of the invention;

FIG. 3 is a right side view the invention;

FIG. 4 is a left side view of the invention;

FIG. 5 is a rear view of the invention; and,

FIG. 6 is a top view of the invention.

In the drawings, the broken lines depict environmental subject matter only and form no part of the claimed design.

Daniels, Mark, Battles, Robert J.

Patent Priority Assignee Title
Patent Priority Assignee Title
5881681, Jan 23 1997 Aerco International, Inc. Water heating system
7046922, Mar 15 2005 SKYE INTERNATIONAL, INC Modular tankless water heater
20050161086,
20120279929,
20140209281,
20170172831,
D342125, Jun 19 1992 Oil heat exchanger
D386561, Mar 21 1996 Heat exchanger
D804623, Mar 12 2015 NORITZ CORPORATION Water heater
/
Executed onAssignorAssigneeConveyanceFrameReelDoc
Jun 10 2021Aerco International, Inc.(assignment on the face of the patent)
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