Granted Patent
Utility
US 6,046,664 · App. 09/035,621
Welding power supply transformer apparatus and method
Inventors:
William P. Weller, Thomas D. Chandler
Patented Case
View Patent ↗
Granted: Apr 4, 2000
Filed: Mar 5, 1998
Inventors
William P. Weller
Thomas D. Chandler
Assignee (at issue)
Scepter Manufacturing, LLC.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.