Transparent staircase

Details Transparent staircase Transparent staircase

2003-02-10

2003-10-28

Clark, Doris (Department: 2914)

Building units and construction elements

Stair, ladder, scaffold, or similar support

Stepped

Design Patent

active

D0481467

CLAIM:
I claim the ornamental design for a transparent staircase, as shown and described.

REFERENCES:
patent: D233750 (1974-11-01), Bryan
patent: D315415 (1991-03-01), Anthony et al.
patent: D342437 (1993-12-01), Prezner
patent: D373833 (1996-09-01), Lapp, Jr.
patent: 5572845 (1996-11-01), DeSouza
patent: D415579 (1999-10-01), DeSouza
patent: 6088977 (2000-07-01), Lawrence
patent: 6115985 (2000-09-01), Wu

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