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:
Apr. 24, 1990
Filed:
Sep. 27, 1988
Daryl E Ingalsbe, Blair, NE (US);
Independent Technologies, Inc., Omaha, NE (US);
Abstract
A telephone line test apparatus is provided for determining the operational status of a telephone line. The apparatus has a cylindrical and compact housing structure, a light emitting diode, a resistor, an electrical interface, and an elongated cable with a terminal modular connector. The electrical interface is disposed within the housing structure and connects the light emitting diode and the resistor in series. The modular connector is communicatively connected to the electrical interface and flexible extends from the housing structure for easy and reliable use. The light emitting diode is a tri-state LED which indicates the presence of D.C. voltage and polarity, as well as A.C. voltage.