USD290290SExpiredUtility

Clean room entry-exit system

36
Assignee: JONES JR ROBERT EPriority: Sep 21, 1984Filed: Sep 21, 1984Granted: Jun 9, 1987
Est. expirySep 21, 2004(expired)· nominal 20-yr term from priority
Inventors:Robert E. Jones
36
PatentIndex Score
2
Cited by
5
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for a clean room entry-exit system, as shown.

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