USD309181SExpiredUtility

Radon exhaust vent cap

31
Individually held — no corporate assignee on recordPriority: Oct 25, 1988Filed: Oct 25, 1988Granted: Jul 10, 1990
Est. expiryOct 25, 2008(expired)· nominal 20-yr term from priority
Inventors:Ronald Simon
31
PatentIndex Score
4
Cited by
6
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a radon exhaust vent cap, as shown and described.

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