USD425977SExpiredUtility

Inside surface of a filter element having insert construction

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Assignee: DONALDSON CO INCPriority: Mar 24, 1998Filed: Mar 24, 1998Granted: May 30, 2000
Est. expiryMar 24, 2018(expired)· nominal 20-yr term from priority
Inventors:Donald F. EngelDolan BartelsJohn R. HackerBruce CrenshawDon Harold
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4
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1
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Claims

exact text as granted — not AI-modified
The ornamental design for inside surface of a filter element having insert construction, as shown and described.

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