IP Library › Granted Patent US 542,734
Granted Patent S1
US 542,734 · App. 29/204,775 · Granted May 15, 2007

Electrical transformers

View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 542,734
App. No.
29/204,775
Granted
May 15, 2007
Kind
S1
Claims (1)

The ornamental design for “electrical transformers,” as shown and described.

Assignments (3)
CHANGE OF NAME Recorded May 20, 2019
From: ABB T&D TECHNOLOGY AG
To: ABB TECHNOLOGY AG
Reel/Frame 049223/0441 →
MERGER Recorded May 20, 2019
From: ABB TECHNOLOGY AG
To: ABB SCHWEIZ AG
Reel/Frame 049223/0792 →
CHANGE OF NAME Recorded May 7, 2019
From: ABB T&D TECHNOLOGY LTD.
To: ABB TECHNOLOGY AG
Reel/Frame 049105/0437 →