USD454839SExpiredUtility
Three-phase ring transformer core
Priority: Sep 2, 1998Filed: Sep 2, 1998Granted: Mar 26, 2002
Est. expirySep 2, 2018(expired)· nominal 20-yr term from priority
Inventors:Lennart Hoglund
49
PatentIndex Score
8
Cited by
6
References
1
Claims
Claims
exact text as granted — not AI-modifiedThe ornamental design for a three-phase ring transformer core, as shown and described.
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