1
David D Otten: System and method for mobile communications in coexistence with established communications systems. Celsat America, Drummond & Duckworth, April 23, 1996: US05511233 (300 worldwide citation)

A mobile communications system provides communications with mobile users in the interference zones of communications services having priority of use of the frequency band in which the mobile user operates. The frequency band has been previously allocated for use by the other services, such as fixed ...


2
Albert J Mallinckrodt: Communications system. Celsat America, Drummond & Duckworth, November 30, 1999: US05995832 (235 worldwide citation)

A cellular communications system is provided have both satellite nodes and surface nodes for providing mobile cellular communications services for a plurality of mobile user units. The surface and satellite nodes are fully integrated by a network controller for providing service over large areas. In ...


3
David D Otten: Position determination for reducing unauthorized use of a communication system. Celsat America, Drummond & Duckworth, November 10, 1998: US05835857 (232 worldwide citation)

Methods for operating a wireless communications system provided for reducing the use of the system by unauthorized users by establishing the geographical location of selected user, comparing this location with the known locations of authorized users and denying service to the selected user if the se ...


4
Albert Jack Mallinckrodt: Power control of an integrated cellular communications system. Celsat America, Drummond & Duckworth, August 22, 2000: US06108561 (220 worldwide citation)

A cellular communications system is provided having both surface and satellite nodes which are fully integrated for providing service over large areas. Two-way adaptive power control and signal quality monitoring and power control responsive thereto are provided for controlling the power output leve ...


5
Albert J Mallinckrodt: position determination in an integrated cellular communications system. Celsat America, Drummond & Duckworth, March 18, 1997: US05612703 (216 worldwide citation)

A cellular communications system is provided having both surface and satellite nodes which are fully integrated for providing service over large areas. Position means are included for determining the position of a selected user unit within the cells by providing a timing signal to the selected user ...


6
Albert J Mallinckrodt: Communications system including control means for designating communication between space nodes and surface nodes. Celsat America, Drummond & Duckworth, November 3, 1998: US05832379 (208 worldwide citation)

A cellular communications system is provided have both satellite nodes and surface nodes for providing mobile cellular communications services for a plurality of mobile user units. The surface and satellite nodes are fully integrated by a network controller for providing service over large areas. In ...


7
Michael Shipman: Keyboard having illuminated keys. Drummond & Duckworth, April 17, 2001: US06217183 (199 worldwide citation)

A keyboard is provided having illuminating keys. The keyboard includes a light channeling membrane and key members constructed at least partially of translucent material so that light produced from a light source is channeled upwardly to the upper surfaces of the key members. The light source may in ...


8
Albert Jack Mallinckrodt: Power control of an integrated cellular communications system. Celsat America, Drummond & Duckworth, March 2, 1999: US05878329 (195 worldwide citation)

A cellular communications system is provided having both surface and satellite nodes which are fully integrated for providing service over large areas. Two-way adaptive power control and signal quality monitoring and power control responsive thereto are provided for controlling the power output leve ...


9
Michael Shipman: Illuminated keyboard. Drummond & Duckworth, July 19, 2005: US06918677 (180 worldwide citation)

A keyboard is provided having illuminating keys. The keyboard includes a light channeling membrane and key members constructed at least partially of translucent material so that light produced from a light source is channeled upwardly to the upper surfaces of the key members. The light source may in ...


10
Albert J Mallinckrodt: Controller for cellular communications system. Celsat America, Drummond & Duckworth, August 17, 1999: US05940753 (175 worldwide citation)

A cellular communications system is provided have both satellite nodes and surface nodes for providing mobile cellular communications services for a plurality of mobile user units. The surface and satellite nodes are fully integrated by a network controller for providing service over large areas. Mu ...