USD289754SExpiredUtility

Intercom door answering unit

75
Assignee: ELECTRON CORP AUST PTY LTDPriority: Feb 23, 1984Filed: Jun 11, 1984Granted: May 12, 1987
Est. expiryFeb 23, 2004(expired)· nominal 20-yr term from priority
Inventors:Gunter H. Koob
75
PatentIndex Score
17
Cited by
7
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for an intercom door answering unit, as shown.

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