Sealing and vacuum-pumping device
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Description
Surface patterns of a nozzle in
Claims
The ornamental design for a sealing and vacuum-pumping device, as shown and described.
Referenced Cited
U.S. Patent Documents
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Patent History
Patent number: D823914
Type: Grant
Filed: Mar 31, 2017
Date of Patent: Jul 24, 2018
Assignee: WELCOME CO., LTD. (New Taipei)
Inventor: Richard Chang (New Taipei)
Primary Examiner: Patricia Ann Palasik
Application Number: 29/599,119
Type: Grant
Filed: Mar 31, 2017
Date of Patent: Jul 24, 2018
Assignee: WELCOME CO., LTD. (New Taipei)
Inventor: Richard Chang (New Taipei)
Primary Examiner: Patricia Ann Palasik
Application Number: 29/599,119
Classifications
Current U.S. Class:
Vacuum Or Heat Seal (D15/146)