Book-support

Office supplies; artists and teachers materials – Office equipment not elsewhere specified – Holder or file

Patent

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Details

D19 90, D19 88, D19 341, 0606

Patent

active

D03998762

REFERENCES:
patent: D112470 (1938-12-01), Steinhardt
patent: 202959 (1878-04-01), Pearson
patent: 1912229 (1933-05-01), Spurr
patent: 2117668 (1938-05-01), Johnson
patent: 2767856 (1956-10-01), Grant
patent: 5016763 (1991-05-01), Martin
patent: 5036988 (1991-08-01), Rouire

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