1
Carl R Tarver, James G Lawrence, Charles L Whittington: Modular electronic package. Motorola Computer X, Emtek Health Care Systems, Walter Nielsen, April 17, 1990: US04918572 (65 worldwide citation)

Method and apparatus for packaging electronic equipment comprise a housing and a "midplane" that is removably secured to suitable flanges centrally located within the housing. Individual sub-modules (CPU, disk drive, I/O unit, power supply, etc.) have suitable electrical connectors which mate with c ...


2
James G Lawrence, Oscar R Diaz, Robert E Erdmann Jr: Point and select device. Emtek Health Care Systems, Paul F Wille, July 3, 1990: US04939508 (43 worldwide citation)

A point and select device is disclosed in which a sphere protruding from one major surface of a housing can serve as either a trackball or the moving element in a mouse. Actuators on either side of the device are selected according to the use of the device. The sense of motion for up/down is reverse ...