Portable attachment device

Transportation – Perambulator – invalid chair – or stretcher – Element or attachment

Design Patent

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Design Patent

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D0472503

CLAIM:
The ornamental design for portable attachment device, as shown.

REFERENCES:
patent: 4913393 (1990-04-01), Wood
patent: D353123 (1994-12-01), Korona
patent: D357440 (1995-04-01), Pietra
patent: D364592 (1995-11-01), Thompson
patent: 5649737 (1997-07-01), Behnke
PDG Product Design Group, “Scotty Lap Top Systems—Components”, Jan. 7, 2001, p. 1.
PDG Product Design Group, “Scotty Lap Top Systems—KIRSTEN”, Jan. 7, 2001, p. 1.
PDG Product Design Group, “Scotty Lap Top—Suggested Demo Kit—Canada”, Jan. 7, 2001, p. 1.

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