Building units and construction elements – Stair – ladder – scaffold – or similar support – Element or attachment
Patent
1993-03-05
1994-12-13
Word, A. Hugo
Building units and construction elements
Stair, ladder, scaffold, or similar support
Element or attachment
D25 62
Patent
active
D03534693
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patent: 4911265 (1990-03-01), Skaggs
patent: 4972923 (1990-11-01), Krause
Clark Doris
Word A. Hugo
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