USD490155SExpiredUtility

Oxygen concentrator

79
Assignee: MATSUSHITA ELECTRIC INDUSTRIAL CO LTDPriority: Dec 9, 2002Filed: Jun 4, 2003Granted: May 18, 2004
Est. expiryDec 9, 2022(expired)· nominal 20-yr term from priority
Inventors:Minoru Nakamura
79
PatentIndex Score
23
Cited by
7
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for an oxygen concentrator, as shown and described.

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