Folded sheets

Details Folded sheets Folded sheets

2007-05-01

2007-05-01

Thomas, Alexander S. (Department: 1772)

Stock material or miscellaneous articles

Structurally defined web or sheet

Fold at edge

C428S121000, C428S136000, C428S131000, C428S130000

Reexamination Certificate

active

10380521

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.

REFERENCES:
patent: 3655501 (1972-04-01), Tesch
patent: 4033611 (1977-07-01), Johnsen
patent: 4046308 (1977-09-01), Silver
patent: 5156898 (1992-10-01), McDonald
patent: 5360655 (1994-11-01), McDonald
patent: 6209918 (2001-04-01), Christopherson
patent: 6572149 (2003-06-01), Long
patent: 19727844 (1999-01-01), None
patent: 0 378 264 (1990-07-01), None
patent: 425788 (1935-03-01), None
patent: 2 024 716 (1979-02-01), None
patent: 2 218 379 (1989-11-01), None
patent: WO 87/04284 (1987-07-01), None
translation of DE 19,727,844.

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