Walking assistance device

Details Walking assistance device Walking assistance device

2007-10-23

2008-10-07

Zarfas, Louis S (Department: 2914)

Design Patent

active

D0577903

CLAIM:
The ornamental design for a walking assistance device, as shown and described.

REFERENCES:
patent: 3165314 (1965-01-01), Clearman et al.
patent: 3986502 (1976-10-01), Gilson
patent: D329538 (1992-09-01), Rau
patent: D349144 (1994-07-01), Greene
patent: D362506 (1995-09-01), Bieri
patent: 6666796 (2003-12-01), MacCready, Jr.
patent: 2006/0276728 (2006-12-01), Ashihara et al.

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