USD283130SExpiredUtility

Combined door viewer and two-way intercom unit

91
Assignee: CLAIBORNE ELECTRONICS INCPriority: Nov 30, 1983Filed: Nov 30, 1983Granted: Mar 25, 1986
Est. expiryNov 30, 2003(expired)· nominal 20-yr term from priority
Inventors:Charles B. Boenning
91
PatentIndex Score
139
Cited by
3
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a combined door viewer and two-way intercom unit, as shown and described.

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