Claims (1)
Claim 1 (Independent)
The ornamental design for an oxygen concentrator, as shown and described.
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The patent or application file contains at least one drawing executed in color. Copies of this patent or patent application publication with color drawing(s) will be provided by the Office upon request and payment of the necessary fee.
1. Oxygen concentrator
1 . 1 : Front
1 . 2 : Back
1 . 3 : Left
1 . 4 : Right
1 . 5 : Top
1 . 6 : Bottom
1 . 7 : Perspective
Citations
This patent cites (25)
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