Battery testing device
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Description
The broken lines show the portions of the battery testing device that form no part of the claimed design.
Claims
The ornamental design for a battery testing device, as shown and described.
Referenced Cited
Patent History
Patent number: D878225
Type: Grant
Filed: Apr 14, 2017
Date of Patent: Mar 17, 2020
Assignee: Tsinghua University (Beijing)
Inventors: Li Qian (Beijing), Yu-Quan Wang (Beijing), Fu-Jun Wang (Beijing), Li-Yong Ma (Beijing), Xue-Wei Guo (Beijing), Yang Wu (Beijing)
Primary Examiner: Derrick E Holland
Application Number: 29/600,796
Type: Grant
Filed: Apr 14, 2017
Date of Patent: Mar 17, 2020
Assignee: Tsinghua University (Beijing)
Inventors: Li Qian (Beijing), Yu-Quan Wang (Beijing), Fu-Jun Wang (Beijing), Li-Yong Ma (Beijing), Xue-Wei Guo (Beijing), Yang Wu (Beijing)
Primary Examiner: Derrick E Holland
Application Number: 29/600,796
Classifications
Current U.S. Class:
Battery, Vaccum Tube, Transistor Or Spark Plug Tester (11) (D10/77)