USD471624SExpiredUtility

Ventilation rotor

37
Assignee: FLETTNER VENTILATOR LTDPriority: Mar 20, 2001Filed: Sep 20, 2001Granted: Mar 11, 2003
Est. expiryMar 20, 2021(expired)· nominal 20-yr term from priority
Inventors:Christopher John HurlstoneMark Anthony Di CioccioReuben WuSophie Rebecca ButlerRobert C. HalsteadAlan P. TyeKevin Alan Alex Tye
37
PatentIndex Score
4
Cited by
18
References
1
Claims

Claims

exact text as granted — not AI-modified
We claim the ornamental design for a ventilation rotor, as shown and described.

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