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 DE19681636286external-prioritypatent/DE1636286C3/de
Application filedfiledCritical
Publication of BE726914ApublicationCriticalpatent/BE726914A/xx
B42F13/00—Filing appliances with means for engaging perforations or slots
B42F13/16—Filing appliances with means for engaging perforations or slots with claws or rings
B42F13/20—Filing appliances with means for engaging perforations or slots with claws or rings pivotable about an axis or axes parallel to binding edges
B42F13/28—Filing appliances with means for engaging perforations or slots with claws or rings pivotable about an axis or axes parallel to binding edges in two staggered sections
