USD271615SExpiredUtility

Damper unit

26
Assignee: ENERGY VENT INCPriority: Apr 6, 1981Filed: Apr 6, 1981Granted: Nov 29, 1983
Est. expiryApr 6, 2001(expired)· nominal 20-yr term from priority
Inventors:John Prikkel, IiiDale R. BooherJeffrey R. Killin
26
PatentIndex Score
0
Cited by
12
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design of a damper unit, as shown and described.

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