USD330211SExpiredUtility

Door viewer

37
Assignee: RUDOLPH DESCO CO LTDPriority: Nov 7, 1991Filed: Nov 7, 1991Granted: Oct 13, 1992
Est. expiryNov 7, 2011(expired)· nominal 20-yr term from priority
Inventors:Donald E. Degnan
37
PatentIndex Score
4
Cited by
6
References
1
Claims

Claims

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

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