USD453279SExpiredUtility
Vacuum flask
Priority: Sep 13, 2000Filed: Sep 13, 2000Granted: Feb 5, 2002
Est. expirySep 13, 2020(expired)· nominal 20-yr term from priority
Inventors:Frank Teh-Hsiung Huang
85
PatentIndex Score
31
Cited by
10
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for vacuum flask, as shown and described.
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