Building units and construction elements – Stair – ladder – scaffold – or similar support – Element or attachment
Design Patent
1998-05-12
2001-08-28
Clark, Doris (Department: 2904)
Building units and construction elements
Stair, ladder, scaffold, or similar support
Element or attachment
Design Patent
active
D0447249
CLAIM:
The ornamental design for “anti-slip strip for stairs”, as shown and described.
REFERENCES:
patent: D. 167994 (1952-10-01), McKay
patent: D. 363785 (1995-10-01), Davies
patent: 4451063 (1984-05-01), Snyder
patent: 5051289 (1991-09-01), Riddle
Chang Sheng-Ming
Chung Su-Jung
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