Rotating element sheet material comprising a plurality of rotatable elements disposed in a substrate and in contact with an enabling fluid; where one of the plurality of rotatable elements comprises a core configured to present a first aspect in a first orientation and a second aspect in a second orientation,...http://www.google.fr/patents/US20020089486?utm_source=gb-gplus-shareBrevet US20020089486 - Rotating element sheet material with dual vector field addressing
Rotating element sheet material with dual vector field addressing
Numéro de demande: 09/757,539 Numéro de publication: US 2002/0089486 A1 Date de dépôt: 11 janv. 2001 Brevet délivré: US6690350 ( Date de délivrance 10 févr. 2004)
