USD331793SExpiredUtility

Filter media for water treatment systems

Assignee: ERWES RUDOLFPriority: Dec 27, 1989Filed: Jun 26, 1990Granted: Dec 15, 1992

Est. expiryDec 27, 2009(expired)· nominal 20-yr term from priority

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exact text as granted — not AI-modified

The ornamental design for a filter media for water treatment systems, as shown.

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