Building units and construction elements – Stair – ladder – scaffold – or similar support – Element or attachment
Patent
1995-06-30
1996-09-24
Davis, Antoine Duval
Building units and construction elements
Stair, ladder, scaffold, or similar support
Element or attachment
Patent
active
D03740897
REFERENCES:
patent: D216158 (1969-11-01), Williams
patent: D332667 (1993-01-01), Brooks
patent: 2415723 (1947-02-01), Bauerlein, Sr.
patent: 5367852 (1994-11-01), Masuda et al.
Davis Antoine Duval
Harrison John M.
LandOfFree
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