Granted Patent
Utility
US 6,747,233 · App. 10/040,858
Non-linear magnetic field distribution in vacuum interrupter contacts
Inventor:
Mietek T. Glinkowski
Patented Case
View Patent ↗
Granted: Jun 8, 2004
Filed: Dec 28, 2001
Inventor
Mietek T. Glinkowski
Assignee (at issue)
ABB TECHNOLOGY 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.