首页>
外国专利>
Post technique improves the door anti - vandalism
Post technique improves the door anti - vandalism
展开▼
机译:立柱技术提高了门的防破坏能力
展开▼
页面导航
摘要
著录项
相似文献
摘要
The frame post (3) has small openings for an intercom or code lock on the street side. The hall side has an access door (31) and a U-shaped metal locking bar cover strip which protects the retaining screw heads at the edge of the access door.
展开▼