NORBERT JOHN THOMAS CHRISTMAN,Steven D. Hamilton,Katherine M. Ross
申请号：
US13221446
公开号：
US20120226183A1
申请日:
2011.08.30
申请国别(地区):
US
年份:
2012
代理人:
摘要：
An improved evacuated air chamber having a plurality of generally flat exterior walls, a closed end, and an open end wherein the open end is provided with a resealable stopper and septum an impervious disc may be provided between the septum and the tube interior.
