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PTO
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Patent
D905477
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Priority
Oct 31 2016
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Filed
Apr 25 2019
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Issued
Dec 22 2020
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Expiry
Dec 22 2035
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Assg.orig
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Entity
unknown
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0
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18
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n/a
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The ornamental design for a mattress extension, as shown and described.
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FIG. 1 is a front perspective view of a mattress extension.
FIG. 2 is a front view thereof, with the rear view being a mirror image thereof.
FIG. 3 is a top plan view thereof; and,
FIG. 4 is a right side elevational view thereof, with the left side view being a mirror image thereof.
Pile, Brian Frank
| Patent |
Priority |
Assignee |
Title |
| Patent |
Priority |
Assignee |
Title |
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| 5367730, |
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Infant cushion |
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Footrest for relieving back fatigue and pain |
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Body support having hingedly connected semi-cylindrical cushions |
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Dec 29 2006 |
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| D732314, |
May 09 2014 |
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| D839025, |
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Oct 24 2017 |
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| Date |
Maintenance Fee Events |
n/a
| Date |
Maintenance Schedule |
n/a