Observation chair

Details Observation chair Observation chair

2011-06-28

2011-06-28

Clark, Doris (Department: 2914)

Building units and construction elements

Stair, ladder, scaffold, or similar support

Design Patent

active

D0640799

CLAIM:
The ornamental design for an observation chair, as shown and described.

REFERENCES:
patent: D242190 (1976-11-01), White
patent: 4614252 (1986-09-01), Tarner
patent: D344346 (1994-02-01), Lobozzo
patent: 5927435 (1999-07-01), Benton
patent: 5967601 (1999-10-01), Gillins
patent: D442699 (2001-05-01), Myer, III
patent: 6637549 (2003-10-01), Lopacki
patent: 6948587 (2005-09-01), Griffiths
patent: 7048091 (2006-05-01), Maguire
patent: 7143865 (2006-12-01), Gray et al.
patent: 7431389 (2008-10-01), Reeb et al.

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