Building units and construction elements – Stair – ladder – scaffold – or similar support – Element or attachment
Design Patent
2001-11-23
2002-09-17
Clark, Doris (Department: 2914)
Building units and construction elements
Stair, ladder, scaffold, or similar support
Element or attachment
Design Patent
active
D0463039
CLAIM:
The ornamental design for a tread of a staircase, as shown and described.
REFERENCES:
patent: D225981 (1973-01-01), Brown
Clark Doris
Kamrath Alan
Rider Bennett Egan & Arundel LLP
Taiwan Lounge Chair Industry Co., Ltd.
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