Building units and construction elements – Stair – ladder – scaffold – or similar support – Stepped
Design Patent
2008-02-05
2009-06-09
Clark, Doris (Department: 2914)
Building units and construction elements
Stair, ladder, scaffold, or similar support
Stepped
Design Patent
active
D0594135
CLAIM:
I claim the ornamental design for a ladder, as shown and described.
REFERENCES:
patent: 3057432 (1962-10-01), Harrison
patent: 4421206 (1983-12-01), Kummerlin
patent: D447572 (2001-09-01), Rosko
Clark Doris
O'Connor Cozen
Play S.A.
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