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
9789280521658
Visually and hearing impaired persons
305.908 / PAT