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:
Feb. 08, 2005
Filed:
Mar. 22, 2001
Applicant:
Dmitry Levitan, Fairfax, VA (US);
Inventor:
Dmitry Levitan, Fairfax, VA (US);
Assignee:
Hubbell Incorporated, Orange, CT (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04M003/42 ; H04M009/00 ;
U.S. Cl.
CPC ...
Abstract
An off-hook management telecommunication system comprising a DTMF detector, an encoder and a microprocessor located within a channel unit. The system allows the user to depress a selected sequence of keys during a line connection which indicate to the microprocessor to hold the line off-hook, via signaling to a central office, despite the fact that the telephone is being returned to an on-hook position. The line is held off-hook for a predetermined amount of time to allow the user to switch telephones.