USD291721SExpiredUtility

Aquarium filter cartridge

38
Assignee: WILLINGER BROSPriority: Dec 16, 1985Filed: Dec 16, 1985Granted: Sep 1, 1987
Est. expiryDec 16, 2005(expired)· nominal 20-yr term from priority
Inventors:Allan H. Willinger
38
PatentIndex Score
2
Cited by
6
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for an aquarium filter cartridge, and described as shown.

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