Vertical file module

Details Vertical file module Vertical file module

1990-03-30

1993-07-20

Holtje, Nelson C.

Office supplies; artists and teachers materials

Office equipment not elsewhere specified

Element or attachment

D19 90, D19 86

Patent

active

D03376192

REFERENCES:
patent: D180863 (1957-08-01), Collins
patent: D249353 (1978-09-01), Juergens et al.
patent: D276923 (1984-12-01), Evenson
patent: D288214 (1987-02-01), Evenson
patent: D306040 (1990-02-01), Evenson
patent: D313047 (1990-12-01), Evenson
patent: D313430 (1991-01-01), Evenson

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