USD297045SExpiredUtility
Friction furnace
Individually held — no corporate assignee on recordPriority: Sep 16, 1985Filed: Sep 16, 1985Granted: Aug 2, 1988
Est. expirySep 16, 2005(expired)· nominal 20-yr term from priority
Inventors:Louis D. Powell
22
PatentIndex Score
0
Cited by
3
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a friction furnace, as shown and described.
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