USD320923SExpiredUtility

Attachment for turning door knobs

45
Assignee: THE CLOVERLINE INCPriority: Sep 19, 1988Filed: Sep 19, 1988Granted: Oct 22, 1991
Est. expirySep 19, 2008(expired)· nominal 20-yr term from priority
Inventors:Norbert Leopoldi
45
PatentIndex Score
4
Cited by
8
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for an attachment for turning door knobs, as shown and described.

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