USD420545SExpiredUtility

Vacuum flask

88
Assignee: HUANG FRANK TEH-HSIUNGPriority: Nov 23, 1998Filed: Nov 23, 1998Granted: Feb 15, 2000
Est. expiryNov 23, 2018(expired)· nominal 20-yr term from priority
Inventors:Frank Teh-Hsiung Huang
88
PatentIndex Score
32
Cited by
6
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for vacuum flask, as shown and described.

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