Granted Patent
Utility
US 4,644,112 · App. 06/815,895
Linear transformer switch
Inventor:
Neil J. Kranich, II
Patented Case
View Patent ↗
Granted: Feb 17, 1987
Filed: Jan 3, 1986
Inventor
Neil J. Kranich, II
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.