Apparatus and method for detecting telephone line status | Patent Number 05388153

US 05388153 NA
Application Number8038752
Publication Number-
Pendency1 year, 10 months, 18 days
Filled DateMar 26, 1993
Priority DateMar 26, 1993
Publication Date-
Expiration DateMar 26, 2013
Inventor/Applicants Theodore O. Burger
John A. Karpicke
Donald R. Means
Donald M. Keen
Brian A. Wittman
Thomas A. Stahl
ExaminesSHANKAR, VIJAY
Art Unit2614
Technology Center2600
Assignments
At&t Company
Current
At&t ServicesAt&t Company
Original
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