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:
May. 08, 1990
Filed:
Mar. 22, 1988
Applicant:
Inventors:
Richard D Gitlin, Monmouth County, NJ (US);
Sailesh K Rao, Ocean County, NJ (US);
Jean-Jacques Werner, Monmouth County, NJ (US);
Nicholas Zervos, Monmouth County, NJ (US);
Assignees:
American Telephone and Telegraph Company, New York, NY (US);
AT&T Information Systems, Inc., Morristown, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04M / ;
U.S. Cl.
CPC ...
379 93 ; 379 98 ; 370 24 ; 370 321 ; 370 76 ; 370119 ; 371 43 ;
Abstract
In a telephone local loop transmission arrangement, data is communicated from the customer premises to the central office utilizing a multi-dimensional, passband signal illustratively at 480 kb/s and 1.544 Mb/s.