Electronic and pneumatic controls for surgical and medical devices and apparatus, namely, for medical tables, stretchers, gurneys, medical carts, medical caddies, medical trolleys, medical racks and furniture; data display units, namely, computer monitors, optical sensors, cameras, video multiplexers, drivers and communications apparatus consisting of digital boards or serial interfaces; data input and output devices apparatus for computers, namely, printers, facsimile machines, scanners, plo...