Convertible wheeled patient aid

Transportation – Perambulator – invalid chair – or stretcher – Wheelchair

Design Patent

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Design Patent

active

D0633830

CLAIM:
The ornamental design for a convertible wheeled patient aid, as shown and described.

REFERENCES:
patent: 4639012 (1987-01-01), Jensen
patent: 5141250 (1992-08-01), Morgan et al.
patent: 5188383 (1993-02-01), Thompson
patent: 5224731 (1993-07-01), Johnson
patent: 5253888 (1993-10-01), Friedrich
patent: 5340140 (1994-08-01), Bynum
patent: 5558358 (1996-09-01), Johnson
patent: 5560627 (1996-10-01), Zatulovsky et al.
patent: 5865457 (1999-02-01), Knabusch et al.
patent: 7052023 (2006-05-01), Chen et al.
patent: 7537237 (2009-05-01), Chung et al.

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