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PTO
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Patent
D252641
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Priority
Feb 09 1977
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Filed
Feb 09 1977
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Issued
Aug 14 1979
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Expiry
Aug 14 1993
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Assg.orig
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Entity
unknown
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15
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6
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n/a
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The ornamental design for a heat recirculator, as shown.
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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.
LaZar, Ralph M.
| Patent |
Priority |
Assignee |
Title |
| 7591301, |
Sep 13 2005 |
Johnson Matthey Public Limited Company |
Low-cost high-temperature heat exchanger |
| 7594326, |
Sep 13 2005 |
Johnson Matthey Public Limited Company |
Method for making a low-cost high-temperature heat exchanger |
| 8047272, |
Sep 13 2005 |
Johnson Matthey Public Limited Company |
High-temperature heat exchanger |
| D262235, |
Aug 22 1979 |
|
Portable air recirculator |
| D262313, |
Aug 22 1979 |
|
Portable air recirculator |
| D269112, |
Oct 22 1980 |
|
Air circulator |
| D276263, |
Sep 30 1982 |
|
Air circulator |
| D329284, |
Apr 15 1991 |
THE HOLMES GROUP, INC |
Portable electric fan |
| D553234, |
Apr 20 2005 |
INTELLIGENT HOME PRODUCTS, LLC, A DELAWARE LIMITED LIABILITY COMPANY |
Ceiling exhaust fan |
| D553235, |
Apr 20 2005 |
INTELLIGENT HOME PRODUCTS, LLC, A DELAWARE LIMITED LIABILITY COMPANY |
Ceiling exhaust fan |
| D553236, |
May 18 2005 |
INTELLIGENT HOME PRODUCTS, LLC, A DELAWARE LIMITED LIABILITY COMPANY |
Ceiling exhaust fan |
| D553237, |
May 18 2005 |
INTELLIGENT HOME PRODUCTS, LLC, A DELAWARE LIMITED LIABILITY COMPANY |
Ceiling exhaust fan |
| D560276, |
Sep 13 2005 |
Johnson Matthey Public Limited Company |
Heat exchanger |
| D579101, |
May 30 2007 |
Johnson Matthey Public Limited Company |
Heat exchanger |
| D789512, |
May 20 2015 |
|
Ductwork |
| Date |
Maintenance Fee Events |
n/a
| Date |
Maintenance Schedule |
n/a