|
PTO
Wrapper
PDF
|
|
Dossier
Espace
Google
|
|
|
|
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, |
|
|
|
| Date |
Maintenance Fee Events |
n/a
| Date |
Maintenance Schedule |
n/a