USD431640SExpiredUtility

Electric heater

78
Assignee: RONG CHERN-BAOPriority: Dec 4, 1998Filed: Feb 19, 1999Granted: Oct 3, 2000
Est. expiryDec 4, 2018(expired)· nominal 20-yr term from priority
Inventors:Chern-Bao Rong
78
PatentIndex Score
29
Cited by
6
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for an electric heater, as shown.

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