Swivel chair base

Details Swivel chair base Swivel chair base

2001-03-27

2002-04-30

Watson, Gary D. (Department: 2913)

Design Patent

active

D0456185

CLAIM:
The ornamental design for a swivel chair base, as shown and described.

REFERENCES:
patent: D326783 (1992-06-01), Piretti
patent: D335398 (1993-05-01), Heidmann
patent: D355534 (1995-02-01), Saotome
patent: D391089 (1998-02-01), Chu
patent: D416406 (1999-11-01), Donati
patent: D431942 (2000-10-01), Chen
patent: D445282 (2001-07-01), Su
patent: D449457 (2001-10-01), Su

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