Binder device releasably engaging aperture or notch of sheet – Sheet retainer with releasable keeper – Keeper including wedge type securing means
Patent
1988-01-15
1989-04-11
Yost, Frank T.
Binder device releasably engaging aperture or notch of sheet
Sheet retainer with releasable keeper
Keeper including wedge type securing means
402 68, 402 69, 312185, B42F 300, B42F 1312, B42F 1336, B42F 900
Patent
active
048200727
ABSTRACT:
Note-book having a cover, constituted by a front flap and by a rear flap joined by a spine, and a stack of sheets joined to one another. The book further includes tabs, protruding from the back of the stack of sheets and removably retainable between the inner surface of the flaps, and trays removably associated with the inner surface of the flaps.
REFERENCES:
patent: 1095944 (1914-05-01), Tallman
patent: 3267938 (1966-08-01), Kopelovitz
patent: 4000951 (1977-01-01), Agnew
Heyrano Paul M.
Josif Albert
Modiano Guido
Nava Milano S.p.A.
Yost Frank T.
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