Building units and construction elements – Stair – ladder – scaffold – or similar support – Stepped
Design Patent
2009-05-29
2010-02-02
Clark, Doris (Department: 2914)
Building units and construction elements
Stair, ladder, scaffold, or similar support
Stepped
Design Patent
active
D0609365
CLAIM:
I claim the ornamental design for a stackable ladder, as shown and described.
REFERENCES:
patent: 972684 (1910-10-01), Devan
patent: 1028453 (1912-06-01), Glover
patent: 1952878 (1934-03-01), Marschutz
patent: D394715 (1998-05-01), Pearson
Clark Doris
Law Offices of Robert M. Patino
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