Books and assemblies for books

Details Books and assemblies for books Books and assemblies for books

1991-11-22

1993-08-31

Bell, Paul A.

Binder device releasably engaging aperture or notch of sheet

Sheet

281 151, 281 16, 281 31, 402 4, 402 80R, B42F 300

Patent

active

052403408

ABSTRACT:
An improved leaf assembly for incorporation into a book, or formed as part of a cover of a book, to allow selective placement of a page adjacent or atop a selected leaf of the book.

REFERENCES:
patent: 166284 (1875-08-01), Lovell
patent: 464417 (1891-01-01), Bevin
patent: 482612 (1892-09-01), Bevin
patent: 512943 (1844-01-01), Brownell
patent: 2490147 (1949-12-01), Minton
patent: 2541735 (1951-02-01), Albrecht, Jr.
patent: 2795059 (1957-06-01), Mendelsohn
patent: 3620552 (1971-11-01), Woodcock et al.
patent: 4932683 (1990-06-01), Perazza
patent: 5048869 (1991-09-01), Schwartz

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