Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
May 1, 2007
Patent Application Number
10380521
Date Filed
September 13, 2001
Patent Primary Examiner
Patent abstract
The present invention provides a sheet material (2) comprising a first fold line and a second fold line, the first and second fold lines being defined by a series of at least partial perforations (4,8) in the sheet material (2), wherein there is one or fewer at least partial perforations at an intersection of the first fold line and the second fold line.
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