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Patent
D329771
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Priority
Aug 24 1989
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Filed
Aug 24 1989
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Issued
Sep 29 1992
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Expiry
Sep 29 2006
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Assg.orig
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Entity
unknown
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3
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10
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n/a
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The ornamental design for a adjustable backrest, as shown and described.
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FIG. 1 is a front perspective view of an adjustable backrest, showing my
new design; and,
FIG. 2 is a rear perspective view thereof.
Zacharkow, Dennis
Patent |
Priority |
Assignee |
Title |
2802220, |
|
|
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3084978, |
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|
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3880463, |
|
|
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4711492, |
May 06 1980 |
|
Chair back arrangement |
480822, |
|
|
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4862536, |
Mar 07 1988 |
|
Back support device |
4981325, |
Aug 25 1988 |
|
Posture support with multi-planar adjustment |
238996, |
|
|
|
D265390, |
Jun 09 1980 |
Yamaha Motor Corporation, U.S.A. |
Combined snowmobile luggage carrier and backrest |
D300620, |
Apr 01 1986 |
Spastic Society of Victoria Limited |
Wheelchair locking unit for use in a vehicle |
Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Date |
Maintenance Fee Events |
n/a
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Maintenance Schedule |
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