Building units and construction elements – Stair – ladder – scaffold – or similar support – Element or attachment
Patent
1984-03-12
1986-11-04
Word, A. Hugo
Building units and construction elements
Stair, ladder, scaffold, or similar support
Element or attachment
Patent
active
D02865742
REFERENCES:
patent: D273996 (1984-05-01), Rasler
patent: 4164299 (1979-08-01), Fuhr
patent: 4300740 (1981-11-01), Killian
patent: 4480810 (1984-11-01), Hall
Moore Stanley R.
Word A. Hugo
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