USD326559SExpiredUtility

Portable document file

72
Assignee: RUBBERMAID INCPriority: Jul 13, 1990Filed: Jul 13, 1990Granted: Jun 2, 1992
Est. expiryJul 13, 2010(expired)· nominal 20-yr term from priority
Inventors:Michael J. SzablakGlen E. Tomblin
72
PatentIndex Score
15
Cited by
20
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a portable document file, as shown and described.

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