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:
Nov. 15, 1983
Filed:
Nov. 30, 1981
Robert L Turner, Tate, GA (US);
Other;
Abstract
Telephone testing equipment, particularly a telephone subscriber test set of the type enabling the subscriber to isolate malfunction either in the household interior telephone equipment, including interior household lines and telephone receivers, or in the telephone company central office lines. A test circuit is connected to the household interior lines, so as be interposed between the telephone company central office lines and the household receiver. This test circuit includes a normally 'open' test switch, a transformer and a dial tone speaker. As the test switch is 'closed', the dial tone, emanating from the telephone company central office lines is amplified through the test circuit speaker. The device includes an especial extension test unit for use in households, having more than one telephone receiver.