Binder device releasably engaging aperture or notch of sheet – Sheet retainer with releasable keeper
Patent
1984-09-24
1985-11-05
Bell, Paul A.
Binder device releasably engaging aperture or notch of sheet
Sheet retainer with releasable keeper
402 79, 402501, B42F 304, B42F 1316
Patent
active
045510393
ABSTRACT:
A binder assembly comprises a binder and leaves which are randomly removable therefrom. The leaves may be removed only by a sidewise shifting movement. Blocking portions are movably mounted on the device selectively to permit or prohibit sidewise movement of the leaves.
REFERENCES:
patent: 1025468 (1912-05-01), Housh
patent: 1371459 (1921-03-01), Amlie
patent: 2332606 (1943-10-01), Scholfield
Basseches Mark T.
Basseches Paula T.
Bell Paul A.
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