Precious stone testing apparatus
Description
Claims
The ornamental design for a precious stone testing apparatus, as shown and described.
Referenced Cited
Patent History
Patent number: D732987
Type: Grant
Filed: Feb 24, 2014
Date of Patent: Jun 30, 2015
Inventors: Xiu Ling Zhu (Shenzhen), Gary Bruce Peckham (Shenzhen)
Primary Examiner: Antoine D Davis
Application Number: 29/483,007
Type: Grant
Filed: Feb 24, 2014
Date of Patent: Jun 30, 2015
Inventors: Xiu Ling Zhu (Shenzhen), Gary Bruce Peckham (Shenzhen)
Primary Examiner: Antoine D Davis
Application Number: 29/483,007
Classifications