Collapsible shelf unit

Details Collapsible shelf unit Collapsible shelf unit

2007-07-24

2007-07-24

Spear, Robert M. (Department: 2913)

Design Patent

active

29203558

CLAIM:
I claim the ornamental design for a collapsible shelf unit, as shown and described.

REFERENCES:
patent: 719060 (1903-01-01), Thomas
patent: 1039694 (1912-10-01), Burton
patent: D104568 (1937-05-01), Griffin
patent: 2518549 (1950-08-01), Hyde
patent: 3235096 (1966-02-01), Hallock et al.
patent: 4191160 (1980-03-01), Elliott
patent: 4759450 (1988-07-01), Ball et al.
patent: 4858773 (1989-08-01), Zimmerman
patent: D319356 (1991-08-01), Vukelich, Sr.
patent: D368186 (1996-03-01), Tiemann
patent: D463697 (2002-10-01), Klein et al.
patent: D485092 (2004-01-01), Rosen

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