A retrofitting, folding, portable keyboard for a notebook computer consists of two, pivotally-hinged halves. The two halves are hinged so that may be assume a perfectly flat, horizontal position, or, alternatively, a laterally raised and sloping configuration that provides an enhanced, ergonometric configuration...http://www.google.co.uk/patents/US6081207?utm_source=gb-gplus-sharePatent US6081207 - Multipurpose, folding, portable computer
