USD473637SExpiredUtility

Fluted filter element

Assignee: DONALDSON CO INCPriority: Dec 3, 2001Filed: Dec 3, 2001Granted: Apr 22, 2003

Est. expiryDec 3, 2021(expired)· nominal 20-yr term from priority

B01D 46/527

PatentIndex Score

146

Cited by

References

Claims

exact text as granted — not AI-modified

The ornamental design for fluted filter element, as shown and described.

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