Window envelope

Abstract

The invention relates to a window envelope ( 1 ) having two flat sides, which form the front and rear sides ( 2, 3 ) thereof and are joined to each other at the edges thereof. Said window envelope also comprises an address window ( 5 ), which is made of a transparent material and which is distant from the window envelope ( 1 ) edges. Said window envelope is characterized in that the material of the address window ( 5 ) is extended to one of said edges and continues at least partially on the rear side of said window envelope ( 1 ) in a coincident manner.

1 . A window envelope ( 1 ) having two flat sides, joined to one another at their edges and forming its front and rear sides ( 2 ,  3 ), and having an address window ( 5 ) made of transparent material, and having an address window ( 5 ) made of transparent material, the address window ( 5 ) being at a distance from the edges of the window envelope ( 1 ), 
 wherein the material of the address window ( 5 ) is extended to one of the edges and continues on the rear side of the window envelope ( 1 ) at least partially congruently.    
     
     
         2 . The window envelope as defined in  claim 1 , wherein at least where the one flat side is transparent and the other flat side opaque, the other flat side bears a pattern on the inside.