Vertical file module

Details Vertical file module Vertical file module

1987-10-15

1990-12-18

Dunkins, Bruce W.

Office supplies; artists and teachers materials

Office equipment not elsewhere specified

Element or attachment

D19 86, D19 90

Patent

active

D03130479

REFERENCES:
patent: D180863 (1957-08-01), Collins
patent: D249353 (1978-09-01), Juergens et al.
patent: 1750576 (1930-03-01), Cubberley
patent: 4163497 (1979-08-01), McEwen
patent: 4241921 (1980-12-01), Miller
Eldon Office Products, .COPYRGT.1986, see p. 13-upper left corner, #1601, Add-A-File.

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