Granted Patent
Utility
US 5,155,672 · App. 07/565,450
Switched multi-tapped transformer power conversion method and apparatus
Inventor:
Craig W. Brown
Patented Case
View Patent ↗
Granted: Oct 13, 1992
Filed: Aug 9, 1990
Inventor
Craig W. Brown
Assignee (at issue)
Heart Interface Corporation
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.