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:
Jan. 03, 1989
Filed:
Dec. 08, 1987
Applicant:
Inventor:
Jerry S Thomas, Phoenix, AZ (US);
Assignee:
American Express Company, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04M / ;
U.S. Cl.
CPC ...
379 91 ; 235381 ;
Abstract
A credit card authorization network which, among other advantages, allows telephone charges to be reduced. A credit card company, operating as an Interexchange Customer, provides trunk-protocol executing modems at a Feature Group B access facility. The modems are interfaced to the trunks, on a T1 digital link, by adapting FXS channel bank cards with a ground start option to translate between E&M signaling and ground start loop signaling.