USD282767SExpiredUtility

Filter unit

82
Assignee: PPM INCPriority: Apr 6, 1982Filed: Apr 6, 1982Granted: Feb 25, 1986
Est. expiryApr 6, 2002(expired)· nominal 20-yr term from priority
Inventors:Frederick M. Shofner
82
PatentIndex Score
17
Cited by
20
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a filter unit, as shown.

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