Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Wireless prepaid telephone system with extended capability










Image Number 8 for United States Patent #6754481.

A telecommunication system incorporates individual station instruments simplified by wireless operation, voice dialing, prepaid accounting and out-call operation, all enabled by cooperative system operation including supporting central equipment. Wireless operation of the central equipment involves a multiple port wireless platform along with other units for interfacing a multitude of mobile station instruments simultaneously for interactive audio communication to, regulate control, monitor and record operations of the instruments, and bridge communication with selected remote terminals through the public switched telephone network. Message capability, emergency abort to an operator station and security features supplement the basic system.








 
 
  Recently Added Patents
Blueberry plant named `DrisBlueFour`
System of providing an internet web site that assists medical professionals draft a letter of medical necessity or other documentation for transmission to a third party payer on behalf of a pa
Method of and apparatus for laser drilling holes with improved taper
Techniques for forming a contact to a buried diffusion layer in a semiconductor memory device
Database caching utilizing asynchronous log-based replication
Method and apparatus for determining the altitude of a mobile device
Radiation protective garment with forced ventilation and method
  Randomly Featured Patents
Device for latching a connector device
Multi-speed transmission
Plasma display panel having an address electrode including loop shape portions
Rear floor structure for a motor vehicle
Method for extracting contents of a package
Method of supplying current to a sodium high-pressure discharge lamp, and current supply system
Phase modulation multiplexing transmission unit and phase modulation multiplexing method
Process for the preparation of high-purity liquid nitrogen
Lunge whip for training horses
Methods for monitoring patients for efficacy of an antiplatelet therapy regimen