Patent Landscape Report on Assistive Devices and Technologies for Visually and Hearing Impaired Persons /

Patent Landscape Report on Assistive Devices and Technologies for Visually and Hearing Impaired Persons / WIPO - s.l. : WIPO, 2015. - 185 p. : col. ill. ; 30 cm.

9789280521658


Visually and hearing impaired persons

305.908 / PAT