Patent
   D574938
Priority
Apr 26 2007
Filed
Apr 26 2007
Issued
Aug 12 2008
Expiry
Aug 12 2022
Assg.orig
Entity
unknown
6
30
n/a
The ornamental design for a heat exchanger, as shown and described.

FIG. 1 is a perspective view of a heat exchanger showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

Li, Gang, Martin, David, Schardt, David L.

Patent Priority Assignee Title
11225807, Jul 25 2018 HAYWARD INDUSTRIES, INC Compact universal gas pool heater and associated methods
11649650, Jul 25 2018 Hayward Industries, Inc. Compact universal gas pool heater and associated methods
7971603, Jan 26 2007 HAYWARD INDUSTRIES, INC Header for a heat exchanger
9353998, Jan 26 2007 Hayward Industries, Inc. Header for a heat exchanger
D936193, Jun 30 2020 Water heat exchanger
D936194, Sep 09 2020 Water heat exchanger
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Apr 26 2007Hayward Industries, Inc.(assignment on the face of the patent)
Jul 18 2007MARTIN, DAVID, MR H-TECH, INC ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0198360814 pdf
Jul 23 2007LI, GANG, MR H-TECH, INC ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0198360844 pdf
Aug 12 2007SCHARDT, DAVID L , MR H-TECH, INC ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0198360800 pdf
Dec 19 2007H-TECH, INC HAYWARD INDUSTRIES, INC MERGER SEE DOCUMENT FOR DETAILS 0203620622 pdf
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Aug 04 2017HAYWARD INDUSTRIES, INC BANK OF AMERICA, N A , AS COLLATERAL AGENTSECURITY INTEREST SEE DOCUMENT FOR DETAILS 0438120694 pdf
Mar 19 2021BANK OF AMERICA, N A , AS COLLATERAL AGENTGSG HOLDINGS, INC RELEASE OF PATENT SECURITY INTEREST SECOND LIEN 0561220218 pdf
Mar 19 2021BANK OF AMERICA, N A , AS COLLATERAL AGENTHAYWARD INDUSTRIES, INC RELEASE OF PATENT SECURITY INTEREST SECOND LIEN 0561220218 pdf
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