Legal status (The legal status 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 status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toppan Inc
Original Assignee
Toppan Printing Co Ltd
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
Application filed by Toppan Printing Co LtdfiledCriticalToppan Printing Co Ltd
Priority to JP14928975ApriorityCriticalpatent/JPS5274428A/en
Publication of JPS5274428ApublicationCriticalpatent/JPS5274428A/en
PURPOSE: A method of making book case by mechanically inserting a semi-circular card paper into the tipmost part of the case, in order that the breakage of back and edges of books can be prevented.
COPYRIGHT: (C)1977,JPO&Japio
JP14928975A1975-12-151975-12-15Method of making book case
PendingJPS5274428A
(en)