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Patent
D574938
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Priority
Apr 26 2007
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Filed
Apr 26 2007
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Issued
Aug 12 2008
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Expiry
Aug 12 2022
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Assg.orig
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Entity
unknown
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6
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30
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n/a
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The ornamental design for a heat exchanger, as shown and described.
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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 on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Apr 26 2007 | | Hayward Industries, Inc. | (assignment on the face of the patent) | | / |
Jul 18 2007 | MARTIN, DAVID, MR | H-TECH, INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 019836 | /0814 |
pdf |
Jul 23 2007 | LI, GANG, MR | H-TECH, INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 019836 | /0844 |
pdf |
Aug 12 2007 | SCHARDT, DAVID L , MR | H-TECH, INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 019836 | /0800 |
pdf |
Dec 19 2007 | H-TECH, INC | HAYWARD INDUSTRIES, INC | MERGER SEE DOCUMENT FOR DETAILS | 020362 | /0622 |
pdf |
Aug 04 2017 | HAYWARD INDUSTRIES, INC | BANK OF AMERICA, N A , AS COLLATERAL AGENT | FIRST LIEN PATENT SECURITY AGREEMENT | 043796 | /0407 |
pdf |
Aug 04 2017 | HAYWARD INDUSTRIES, INC | BANK OF AMERICA, N A , AS COLLATERAL AGENT | SECOND LIEN PATENT SECURITY AGREEMENT | 043790 | /0558 |
pdf |
Aug 04 2017 | HAYWARD INDUSTRIES, INC | BANK OF AMERICA, N A , AS COLLATERAL AGENT | SECURITY INTEREST SEE DOCUMENT FOR DETAILS | 043812 | /0694 |
pdf |
Mar 19 2021 | BANK OF AMERICA, N A , AS COLLATERAL AGENT | GSG HOLDINGS, INC | RELEASE OF PATENT SECURITY INTEREST SECOND LIEN | 056122 | /0218 |
pdf |
Mar 19 2021 | BANK OF AMERICA, N A , AS COLLATERAL AGENT | HAYWARD INDUSTRIES, INC | RELEASE OF PATENT SECURITY INTEREST SECOND LIEN | 056122 | /0218 |
pdf |
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