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. 28, 1987
Filed:
Apr. 01, 1985
Applicant:
Inventor:
Michael G Kossor, Roselle, NJ (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M / ;
U.S. Cl.
CPC ...
379200 ; 379387 ; 379 61 ;
Abstract
A security device to protect a telephone line from unauthorized outgoing calls from a telephone unit, comprising either a conventional or cordless type receiver, which includes an access limiter and bypass circuit interposed between the base telephone and the telephone line which responds to an access enabling device to unblock the access limiter and bypass to outgoing calls. In one form, the access enabling device is an electronic circuit which responds to a multidigit dial signal to unblock the outgoing calls. In a simpler form, the access enabling device includes mechanically actuated device, such as a lock and key, to block and unblock outgoing calls.