Portable sidewalk

Details Portable sidewalk Portable sidewalk

2001-06-15

2003-01-14

Zarfas, Louis S. (Department: 2914)

Building units and construction elements

Architectural stock material

Construction block or brick type

Design Patent

active

D0468840

CLAIM:
I claim the ornamental design for a portable sidewalk, as shown and described.

REFERENCES:
patent: 3802144 (1974-04-01), Spica
patent: 4376596 (1983-03-01), Green
patent: 4509930 (1985-04-01), Schweigert et al.
patent: 4596731 (1986-06-01), Cudmore et al.
patent: 4681482 (1987-07-01), Arciszewski et al.
patent: 4826351 (1989-05-01), Haberhauer et al.
patent: 4917532 (1990-04-01), Haberhauer et al.
patent: 5190799 (1993-03-01), Ellingson
patent: 5288165 (1994-02-01), Dekker
patent: 5527128 (1996-06-01), Rope et al.
patent: D388647 (1998-01-01), Odell
patent: 5833386 (1998-11-01), Rosan et al.

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