USD377882SExpiredUtility

Vacuum flask

45
Individually held — no corporate assignee on recordPriority: Mar 5, 1996Filed: Mar 5, 1996Granted: Feb 11, 1997
Est. expiryMar 5, 2016(expired)· nominal 20-yr term from priority
Inventors:Frank Teh-Hsiung Huang
45
PatentIndex Score
5
Cited by
3
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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