Flange step

Details Flange step Flange step

2002-07-09

2003-02-25

Clark, Doris (Department: 2914)

Building units and construction elements

Stair, ladder, scaffold, or similar support

Element or attachment

Design Patent

active

D0470949

CLAIM:
The design for a flange step, as shown and described.

REFERENCES:
patent: 4290495 (1981-09-01), Elliston
patent: 5379861 (1995-01-01), Amacker
patent: 5704427 (1998-01-01), Buck et al.
patent: 5954158 (1999-09-01), Concepcion
patent: D433761 (2000-11-01), Phillips
patent: D434158 (2000-11-01), Armstrong et al.
patent: 6234253 (2001-05-01), Dallas

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