USD250038SExpiredUtility
Fireplace heat amplifier
Individually held — no corporate assignee on recordPriority: Mar 30, 1977Filed: Mar 30, 1977Granted: Oct 24, 1978
Est. expiryMar 30, 1997(expired)· nominal 20-yr term from priority
Inventors:David Joseph Bohnen
26
PatentIndex Score
0
Cited by
9
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a fireplace heat amplifier, as shown and described.
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