USD346806SExpiredUtility
Three-way call detector unit
Assignee: COMMUNICATION EQUIPMENT & ENG COMPANYPriority: Feb 24, 1993Filed: Feb 24, 1993Granted: May 10, 1994
Est. expiryFeb 24, 2013(expired)· nominal 20-yr term from priority
Inventors:Edward U. Chong
55
PatentIndex Score
11
Cited by
9
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a three-way call detector unit, as shown and described.
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