发明名称 Retractable screen door housing handle balancing system
摘要 A horizontally extending screen door system having balancing cords that pull in a direction that opposes the force on a handle by the screen exerted by the wind up mechanism of the screen.
申请公布号 US8011413(B2) 申请公布日期 2011.09.06
申请号 US20060424335 申请日期 2006.06.15
申请人 SCREENLINE INNOVATIONS, INC. 发明人 POPPEMA JOHN
分类号 E06B9/08 主分类号 E06B9/08
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