USD823914SActiveUtility
Sealing and vacuum-pumping device
Est. expiryMar 31, 2037(~10.7 yrs left)· nominal 20-yr term from priority
Inventors:Richard Chang
67
PatentIndex Score
11
Cited by
25
References
1
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Claims
exact text as granted — not AI-modifiedCLAIM
The ornamental design for a sealing and vacuum-pumping device, as shown and described.Cited by (0)
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