The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 16, 1985
Filed:
Dec. 12, 1983
Applicant:
Inventor:
George A DeBalko, Hanover Township, Morris County, NJ (US);
Assignee:
AT&T Bell Laboratories, Murray Hill, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
1791 / ;
Abstract
A method and apparatus for locating faults in a transmission line as being on a customer side or a network side of the apparatus is disclosed. A maintenance termination unit (30) is described that includes a pair of normally open voltage sensitive switches (16) respectively connected in series with conductors (11,13) of a transmission loop (10) and a distinctive termination (23) connected between the conductors on the customer side of the switches. The distinctive termination includes a resistor (20) and oppositedly disposed diode (18) zener diode (19) pair.