USD261640SExpiredUtility

Coupling transformer

Assignee: TRANSFORMATOREN UNION AGPriority: Dec 8, 1978Filed: Jun 6, 1979Granted: Nov 3, 1981
Est. expiryDec 8, 1998(expired)· nominal 20-yr term from priority
68
PatentIndex Score
10
Cited by
5
References
1
Claims

Claims

exact text as granted — not AI-modified
The ornamental design for the coupling transformer, as shown.

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