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Patent
D585154
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Priority
Aug 31 2007
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Filed
Feb 26 2008
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Issued
Jan 20 2009
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Expiry
Jan 20 2023
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Assg.orig
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Entity
unknown
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6
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8
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n/a
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The ornamental design for a fresnel lens, as shown and described.
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FIG. 1 is a front, elevational view of a fresnel lens embodying my new design;
FIG. 2 is a top plan view thereof, the bottom plan view being identical; and,
FIG. 3 is a left side elevational view thereof, the right side elevational view being identical.
Ryder, Nils
Patent |
Priority |
Assignee |
Title |
3020395, |
|
|
|
4011857, |
Nov 24 1975 |
|
Solar energy converter and elongated Fresnel lens element |
D315424, |
Feb 27 1989 |
Fresnel Technologies, Inc. |
Vertical barrier fresnel lens array for infrared motion detector systems |
D315805, |
Feb 27 1989 |
Fresnel Technologies, Inc. |
Horizontal fan fresnel lens array for infrared motion detector |
D315808, |
Feb 27 1989 |
Fresnel Technologies, Inc. |
Extra wide angle fresnel lens array for infrared motion detector |
D331126, |
Aug 16 1991 |
Fresnel Technologies, Inc. |
Extra wide angle fresnel lens array for infrared motion detector |
D340311, |
Jan 24 1991 |
Fresnel Technologies, Inc. |
Fresnel lens array for infrared motion detector |
D340312, |
Jan 24 1991 |
Fresnel Technologies, Inc. |
Wide angle fresnel lens array for infrared motion detector |
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