Building units and construction elements – Stair – ladder – scaffold – or similar support – Element or attachment
Patent
1977-12-08
1980-02-19
Gandy, James M.
Building units and construction elements
Stair, ladder, scaffold, or similar support
Element or attachment
D2502
Patent
active
D02542722
REFERENCES:
patent: 4027742 (1977-06-01), House, Jr.
Gandy James M.
Thompson Jr. Woodford R.
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