USD553810SExpiredUtility
Vacuum machine
Est. expiryFeb 1, 2026(expired)· nominal 20-yr term from priority
Inventors:Tung Yan Lau
50
PatentIndex Score
7
Cited by
7
References
1
Claims
Claims
exact text as granted — not AI-modifiedCLAIM
The ornamental design for a vacuum machine, as shown and described.Join the waitlist — get patent alerts
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