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Class Information
Number: 281/40
Name: Books, strips, and leaves > Book, element thereof, or accessory therefor > Leaves > Flat opening
Description: Leaves modified or mounted so as to render the books in which they are bound flat-opening.

Sub-classes under this class:

Class Number Class Name Patents
281/41 Single leaf 12

Patents under this class:

Patent Number Title Of Patent Date Issued
8668228 Lay flat book sheets Mar. 11, 2014
8622415 Convertible transport apparatus Jan. 7, 2014
8376408 Children's book Feb. 19, 2013
8308194 Folding booklet Nov. 13, 2012
8308195 Small book fabrication system Nov. 13, 2012
7571935 Binding for books Aug. 11, 2009
7568853 Document binder assembly Aug. 4, 2009
7490860 Open and lay-flat printed bound book or booklet and method of binding Feb. 17, 2009
7144044 Foam book with improved binding and method II Dec. 5, 2006
7045199 Drawable and writable photo album May. 16, 2006
7008134 Disc management system Mar. 7, 2006
6966721 Wrap-around notebook Nov. 22, 2005
6942413 Disc management system Sep. 13, 2005
6726251 Booklet Apr. 27, 2004
6644882 Folder Nov. 11, 2003
6578873 Photo album Jun. 17, 2003
6398474 Method of manufacturing a book block with a rounded or a rounded and pressed back Jun. 4, 2002
6364559 Folder having covers with support portions Apr. 2, 2002
6349969 Booklet Feb. 26, 2002
6316081 Photographic jacket and album Nov. 13, 2001
6139210 Photographic holder assembly and album Oct. 31, 2000
5921693 Binding system for loose leaf papers Jul. 13, 1999
5536044 Hot melt adhesive bound book Jul. 16, 1996
5499847 Hardback books Mar. 19, 1996
5207456 Lay flat hinge binding May. 4, 1993
5129772 Adhesive extrusion method for bookbinding Jul. 14, 1992
4911475 Book binding construction Mar. 27, 1990
4579369 Printed matter, particularly newspaper Apr. 1, 1986
4524991 Snap on device for hardcover ring binder Jun. 25, 1985

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