Rotary card file

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

Patent

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D1902

Patent

active

D02612801

REFERENCES:
patent: D243526 (1977-03-01), Overman
patent: 2703744 (1955-03-01), Karper
patent: 2731966 (1956-01-01), Neilsen
patent: 3890727 (1975-06-01), Rose
patent: 4079531 (1978-03-01), Norris et al.
Office Products 2/76, p. 42, Item No. 2.
Office Products 6/76, p. 63, Item No. 2.

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