A key top member for a push button switch structure capable of facilitating change and modification of a design while eliminating deformation and misregistration of a display section, being accommodated to a variety of data, being increased in design properties and visibility, and being reduced in manufacturing...http://www.google.fr/patents/US7182907?utm_source=gb-gplus-shareBrevet US7182907 - Method for manufacturing a key top member for push button switch structure
Method for manufacturing a key top member for push button switch structure
