Electrical transformer

The ornamental design for an electrical transformer, as shown and described.

FIG. 1 is a front view of an electrical transformer;

FIG. 2 is a top view of said electrical transformer;

FIG. 3 is a side view of said electrical transformer; and,

FIG. 4 is a perspective view of said electrical transformer.

Patent

Priority

Assignee

Title

Patent	Priority	Assignee	Title
2947957,
3479563,
3781741,
4027279,	Jul 21 1975		Device for attaching leads to a transformer or the like
4257027,	Nov 27 1978	Shimoda Electric Company	Transformer bobbin assembly
6185811,	Sep 06 1996	Hammond Manufacturing Company	Method for making a transformer
188248,
188249,
202045,
D257342,	Dec 11 1978		Electrical transformer
D259040,	Apr 27 1978	General Electric Company	Vaporization cooled transformer or similar article
D290456,	Dec 27 1983	Marelco Power Systems, Inc.	Transformer
D294565,	Mar 30 1984	SCHLUMBERGER RESOURCE MANAGEMENT SERVICES, INC	Voltage transformer
D324371,	Jul 11 1988	Societe pour l'Application de l'Optique et de l'Electronique a la	Electric transformer

Executed on	Assignor	Assignee	Conveyance	Frame	Reel	Doc
Dec 19 2006		ABB Technology AG	(assignment on the face of the patent)
May 09 2016	ABB Technology Ltd	ABB Schweiz AG	MERGER SEE DOCUMENT FOR DETAILS	040621	0633	pdf

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