Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2106881Uexternal-prioritypatent/JPS57134036U/ja
Priority claimed from JP17408681Uexternal-prioritypatent/JPS5880230U/ja
Application filed by France Bed CofiledCriticalFrance Bed Co
Priority claimed from EP82100869Aexternal-prioritypatent/EP0058858B1/de
Application grantedgrantedCritical
Publication of ATE13387T1publicationCriticalpatent/ATE13387T1/de