Digital protractor
Latest Guilin Gemred Sensor Technology Ltd. Patents:
Description
Claims
The ornamental design for a digital protractor, as shown and described.
Referenced Cited
Patent History
Patent number: D568772
Type: Grant
Filed: Jun 10, 2007
Date of Patent: May 13, 2008
Assignee: Guilin Gemred Sensor Technology Ltd. (Guilin)
Inventors: Guangjin Li (Guilin), Changsong Jiang (Guilin)
Primary Examiner: Antoine D. Davis
Attorney: Matthias Scholl P.C.
Application Number: 29/280,934
Type: Grant
Filed: Jun 10, 2007
Date of Patent: May 13, 2008
Assignee: Guilin Gemred Sensor Technology Ltd. (Guilin)
Inventors: Guangjin Li (Guilin), Changsong Jiang (Guilin)
Primary Examiner: Antoine D. Davis
Attorney: Matthias Scholl P.C.
Application Number: 29/280,934
Classifications
Current U.S. Class:
Angle Or Direction (7) (D10/65)