Robotic vacuum cleaner

Washing – cleaning – or drying machine – Washing – cleaning – or drying machine – Surface treatment – e.g. – floor – street – etc.

Design Patent

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Design Patent

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D0474312

CLAIM:
The ornamental design for a robotic vacuum cleaner, as shown and described.

REFERENCES:
patent: D212257 (1968-09-01), Schaefer et al.
patent: 4306329 (1981-12-01), Yokoi
patent: 5109566 (1992-05-01), Kobayashi et al.
patent: 5144716 (1992-09-01), Watanabe et al.
patent: 5293955 (1994-03-01), Lee
patent: 5353468 (1994-10-01), Yap et al.
patent: 5515934 (1996-05-01), Davis
patent: 5781960 (1998-07-01), Kilstrom et al.
patent: 5940927 (1999-08-01), Haegermarck et al.

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