Patent name: book corner card

Patent Name: Book Corner Card Patent Application No. 6 Publication Number: 2642512
Application Date 2003.09.19 Publication Date: 2004.09.22
Applicant: Sun Yi is a book protection corner card that protects the corners of books. Its characteristics are: after bending the card 90 degrees on one of its inner sides, fixing the number of inserts. The other on the inner side with glue, better The fixed card is more conducive to the protection of books, the cost is very low, and it is very convenient for mass production.

Source: Printed Today