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.

Date of Patent:
Oct. 06, 1998

Filed:

Jun. 20, 1995
Applicant:
Inventors:

Allen W Vogl, Melbourne, FL (US);

Thomas D Young, Snellville, GA (US);

Steven E Betts, Roswell, GA (US);

Scott G Turner, Cumming, GA (US);

Assignee:

Technology Service Group, Roswell, GA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04M / ; H04M / ; H04M / ;
U.S. Cl.
CPC ...
379145 ; 379155 ; 379189 ; 455565 ;
Abstract

A cellular paystation system has a transceiver, paystation and an interface. The cellular paystation system operates to prevent return dial tone fraud by providing from the interface a first dial tone to a calling party using the paystation when an off-hook condition is first detected at the paystation by the interface, and then preventing another dial tone from being provided to the calling party until an on-hook condition of the calling party is detected by the interface at the paystation.


Find Patent Forward Citations

Vogl, Allen. (1998). Method and apparatus for preventing return dial tone fraud in a cellular (U.S. Patent No. 5818916). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5818916

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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