USD320458SExpiredUtility

Oxygen concentration

39
Assignee: RYDER INT CORPORATIONPriority: Mar 9, 1989Filed: Mar 9, 1989Granted: Oct 1, 1991
Est. expiryMar 9, 2009(expired)· nominal 20-yr term from priority
Inventors:Francis E. RyderJoseph J. Cerola
39
PatentIndex Score
2
Cited by
5
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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