(57) A Γ-shape bookmark is made from a sheet of transparent, flexible and resilient materials,
or from a combination of such materials and non-transparent materials. A body plate
V goes in a book. A hook I is for hanging the bookmark on the top end against the
spine of the book. A margin area A above the body plate V is for displaying texts
and/or images. A transparent page-holder S allows secure holding of an opened page
without blocking the reader's view of the texts. The outer edge J of the page-holder
S may be slanted inward, while the inner edge Z outward. The edge P of the plate V
may either have teeth Xn, Yn, etc., or may be sandwiched by two narrow strips of high friction material. Holes
Rn allow the bookmark to be installed in a binder. A barcode, mosaic code or IC chip
allows electronic data processing.
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