Granted Patent
Utility
US 6,374,480 · App. 09/430,561
Method and apparatus for making a transformer core from amorphous metal ribbons
Inventor:
Mark E. Rand
Patented Case
View Patent ↗
Granted: Apr 23, 2002
Filed: Oct 29, 1999
Inventor
Mark E. Rand
Assignee (at issue)
ABB AG
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.