USD341655SExpiredUtility

Air duct riser

30
Assignee: GENERAL PLASTICS INCPriority: Feb 5, 1993Filed: Feb 5, 1993Granted: Nov 23, 1993
Est. expiryFeb 5, 2013(expired)· nominal 20-yr term from priority
Inventors:John P. IndaJoseph J. Inda
30
PatentIndex Score
1
Cited by
10
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for an air duct riser, as shown and described.

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