Device for establishing a galvanically separate connection between a telephone line and a signal processing unit at the subscriber end of the telephone line | Patent Number 06978013
US 06978013 B1Filled DateSep 14, 1999
Priority DateSep 14, 1999
Publication Date-
Expiration DateDec 20, 2017
Inventor/ApplicantsHerm Thomas Zwick
ExaminesKRZYSTAN, ALEXANDER J
Art Unit2643
Technology Center2600
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