Patent
   D568772
Priority
Jun 10 2007
Filed
Jun 10 2007
Issued
May 13 2008
Expiry
May 13 2022
Assg.orig
Entity
unknown
16
3
n/a
The ornamental design for a digital protractor, as shown and described.

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 Protractor
ER1243,
ER1530,
ER213,
ER2447,
ER2742,
ER2743,
ER4481,
ER4622,
ER5920,
ER6584,
ER6703,
Patent Priority Assignee Title
7299560, Feb 15 2005 TOPLINE INNOVATIONS, LLC Multi-purpose tool
D376110, Oct 05 1995 Angle measuring tool
D385500, Oct 05 1995 Angle measuring tool
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Jun 10 2007Guilin Gemred Sensor Technology Ltd.(assignment on the face of the patent)
Mar 27 2008LI, GUANGJINGUILIN GEMRED SENSOR TECHNOLOGY LTD ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0207750700 pdf
Mar 27 2008JIANG, CHANGSONGGUILIN GEMRED SENSOR TECHNOLOGY LTD ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0207750700 pdf
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