File folder with integral loose leaf binder rings

Details File folder with integral loose leaf binder rings File folder with integral loose leaf binder rings

1979-05-16

1981-03-17

Bell, Paul A.

Binder device releasably engaging aperture or notch of sheet

Depository

402 13, 402 19, B42F 300

Patent

active

042564115

ABSTRACT:
Loose leaf folder having back and front cover panels and ring binder forming strips integral therewith for releasably fastening loose leaf sheets within the folder. The binder forming strips are struck from the back cover panel and include barbed tips. Retaining cutouts are provided in the front cover opposite the binder strips to register therewith. The barbed end of each strip is engageable with the cutouts to hold said strips in ring-like configuration for fastening hole punched loose leaf sheets within the folder.

REFERENCES:
patent: 2559556 (1951-07-01), Ambler
patent: 3246653 (1966-04-01), Sexton
patent: 3362411 (1968-01-01), Moller
patent: 3362412 (1968-01-01), Moller
patent: 3834824 (1974-09-01), Jahn
patent: 4135832 (1979-01-01), Saltz
patent: 4174909 (1979-11-01), Jahn

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