Patent
   D597942
Priority
Oct 08 2008
Filed
Dec 31 2008
Issued
Aug 11 2009
Expiry
Aug 11 2023
Assg.orig
Entity
unknown
5
8
n/a
The ornamental design for a step-up transformer, as shown.

FIG. 1 is a perspective view of the front and right side of a step-up transformer showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

Koizumi, Yosuke

Patent Priority Assignee Title
D682204, Mar 26 2012 Transformer
D701167, Apr 17 2013 SHUN-FU INTERNATIONAL ELECTRICAL CO., LTD. Self-cooling power saver
D719910, Feb 15 2013 General Electric Company Energy storage device
D795215, Aug 14 2015 Delta Electronics, Inc. Telecommunication power cabinet
D919569, Dec 27 2019 Smart Hero Enterprises Ltd Electronic transformer
Patent Priority Assignee Title
3056893,
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D289033, Mar 30 1984 SCHLUMBERGER RESOURCE MANAGEMENT SERVICES, INC Voltage transformer
D339323, Apr 18 1988 Marelco Power Systems, Inc. Lighting transformer disconnect
D392940, Jul 30 1996 Davinci Industries Inc. Transformer
D433993, May 27 1999 Transformer
D433995, Sep 17 1999 TECHNOMAGNET LTD Lighting transformer
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Dec 26 2008KOIZUMI, YOSUKEKabushiki Kaisha Audio-TechnicaASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0222020963 pdf
Dec 31 2008Kabushiki Kaisha Audio-Technica(assignment on the face of the patent)
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