Binder with knee support

Details Binder with knee support Binder with knee support

1990-08-20

1993-08-03

Burke, Wallace R.

Office supplies; artists and teachers materials

Book, album or cover

Ring bound or looseleaf type

Patent

active

D03380351

REFERENCES:
patent: D139017 (1944-10-01), Leatherman
patent: D218980 (1985-10-01), Hauville
patent: D282043 (1986-01-01), Morin
patent: 544684 (1895-08-01), Parker
patent: 615480 (1898-12-01), Englund
patent: 1797610 (1931-03-01), Hurlburt
patent: 1820841 (1931-08-01), Soref
patent: 2039922 (1936-05-01), Neats et al.
patent: 2140805 (1938-12-01), Marseglia
patent: 2478849 (1949-08-01), Thompson, Sr.
patent: 2663603 (1970-10-01), Newman
patent: 3147949 (1964-09-01), Webster
patent: 3821936 (1974-07-01), Morse
patent: 4890728 (1990-01-01), Grimsley
patent: 4903932 (1990-02-01), Stewart, Jr.

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