Building units and construction elements – Stair – ladder – scaffold – or similar support – Stepped
Patent
1996-01-11
1998-01-06
Clark, Doris
Building units and construction elements
Stair, ladder, scaffold, or similar support
Stepped
2504
Patent
active
D03888827
REFERENCES:
patent: D341895 (1993-11-01), Idh
patent: 4016955 (1977-04-01), Gates
patent: 4485892 (1984-12-01), Maloney et al.
patent: 5120013 (1992-06-01), Sweeney
Cosco 1995 Home Furnishings Catalog (Cover and pp. 2, 3) (1995).
Clark Doris
Cosco, Inc.
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