Granted Patent
Utility
US 4,533,797 · App. 06/618,264
Low voltage rotary tap changer
Inventors:
Neil J. Kranich, II, Wallace E. Boivin, Jr.
Patented Case
View Patent ↗
Granted: Aug 6, 1985
Filed: Jun 7, 1984
Inventors
Neil J. Kranich, II
Wallace E. Boivin, Jr.
Assignee (at issue)
ASEA Electric, Inc.
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.