Scaffold unit

Details Scaffold unit Scaffold unit

1998-06-10

1999-09-07

Clark, Doris

Building units and construction elements

Stair, ladder, scaffold, or similar support

Element or attachment

2504

Patent

active

D04136810

REFERENCES:
patent: D216158 (1969-11-01), Williams
patent: D349165 (1994-07-01), Jasmund
patent: 2297316 (1942-09-01), Padgett
patent: 3119590 (1964-01-01), Eriksson
patent: 3134567 (1964-05-01), Shoemaker
patent: 3595510 (1971-07-01), Hutchinson
patent: 3698680 (1972-10-01), Shoemaker
patent: 4153229 (1979-05-01), Bequette
patent: 4298096 (1981-11-01), Prior
patent: 4957185 (1990-09-01), Courchesne et al.
patent: 5062607 (1991-11-01), Kisner
patent: 5259477 (1993-11-01), Fears et al.
patent: 5727650 (1998-03-01), Thomas

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