| 摘要 |
A fastening system for making right angle interconnections between first and second rigid structural components of a framework, each having at least two flat mutually parallel sides and each carrying a track. A "U"-shaped connector having a flat base and mutually parallel upright stems is disposed so that the base of the connector engages one of the tracks of the first frame member and the upright stems engage the respective tracks of the second frame member.
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