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:
Jun. 16, 1987
Filed:
Mar. 25, 1985
Applicant:
Inventor:
Roger J Tosto, Yorktown Heights, NY (US);
Assignee:
Tie/Communications, Inc., Shelton, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M / ;
U.S. Cl.
CPC ...
379393 ; 379396 ;
Abstract
A telephone line hold and hold release circuit which, after a central office line which is connected to at least two telephone sets in a telephone terminal system has been seized in response to an incoming call and then placed on HOLD, releases that central office line from the HOLD condition in response to either (i) the re-closing of the hookswitch of the telephone set which seized the central office line, or (ii) the closing of the hookswitch of another telephone set connected to that central office line, or (iii) the release of the central office line by the caller.