Gregory James Olsen,Peter David Alexander Bearne,Leon Edward Evans,Matthew Roger Stephenson,Craig Robert Prentice,Bernard Tsz Lun Ip,Tony William Spear,Mark Arvind McLaren,Roheet Patel,Brad Michael Ho
申请号：
GB201603272
公开号：
GB2532396B
申请日:
2012.04.13
申请国别(地区):
GB
年份:
2016
代理人:
摘要：
A mask assembly has a first upper portion movably connected to a lower portion. At least a portion of the first upper portion (154) is configured to roll so as to overlie at least a portion of a second upper portion (130) when a first boundary of the first upper portion is moved towards a second boundary of the second upper portion
