Prop for flat files

Details Prop for flat files Prop for flat files

1977-11-23

1980-12-30

Stearman, Joel

Office supplies; artists and teachers materials

Office equipment not elsewhere specified

Holder or file

D19 99, D1999

Patent

active

D02577305

REFERENCES:
patent: 2836402 (1958-05-01), Barnes et al.
patent: 3006679 (1961-10-01), Gray
patent: 3520570 (1970-07-01), Christopher et al.
patent: 3551016 (1970-12-01), Hooper

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