USD261676SExpiredUtility

Compact oxygen concentrator

67
Assignee: GREENE & KELLOGGPriority: May 14, 1979Filed: May 14, 1979Granted: Nov 3, 1981
Est. expiryMay 14, 1999(expired)· nominal 20-yr term from priority
Inventors:Norman R. Mccombs
67
PatentIndex Score
8
Cited by
3
References
1
Claims

Claims

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

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