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Patent
D568772
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Priority
Jun 10 2007
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Filed
Jun 10 2007
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Issued
May 13 2008
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Expiry
May 13 2022
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Assg.orig
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Entity
unknown
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16
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3
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n/a
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The ornamental design for a digital protractor, as shown and described.
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FIG. 1 is a front elevational view of a digital protractor;
FIG. 2 is a rear elevational view thereof;
FIG. 3 is a left side elevational view thereof;
FIG. 4 is a right side elevational view thereof;
FIG. 5 is a top plan view thereof; and,
FIG. 6 is a bottom plan view thereof.
Li, Guangjin, Jiang, Changsong
Patent |
Priority |
Assignee |
Title |
D657271, |
Nov 17 2010 |
|
Angle measuring tool |
D657272, |
Nov 17 2010 |
|
Angle measuring tool |
D678086, |
Dec 22 2011 |
|
Digital sliding protractor |
D689383, |
Jul 02 2012 |
Neshiwat Designs, LLC |
Digital goniometer |
D975557, |
Oct 09 2019 |
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Protractor |
ER1243, |
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ER1530, |
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ER213, |
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ER2447, |
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ER2742, |
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ER2743, |
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ER4481, |
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ER4622, |
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ER5920, |
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ER6584, |
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ER6703, |
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Date |
Maintenance Fee Events |
n/a
Date |
Maintenance Schedule |
n/a