Building units and construction elements – Stair – ladder – scaffold – or similar support
Patent
1997-10-06
1998-07-21
Clark, Doris
Building units and construction elements
Stair, ladder, scaffold, or similar support
2504
Patent
active
D03963039
REFERENCES:
patent: D344346 (1994-02-01), Labozzo
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patent: 4579198 (1986-04-01), Lee
patent: 5267632 (1993-12-01), Mintz
patent: 5368127 (1994-11-01), Phillips
patent: 5454445 (1995-10-01), Berryman
patent: 5492198 (1996-02-01), Williams
patent: 5538101 (1996-07-01), Kempf
patent: 5564524 (1996-10-01), Thaggard et al.
Odom David R.
Odom Jeffrey P.
Clark Doris
Volk David L.
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