Granted Patent
Utility
US 4,965,658 · App. 07/291,780
System for mounting and cooling power semiconductor devices
Inventors:
Dean K. Norbeck, Harold Robert Schnetzka
Patented Case
View Patent ↗
Granted: Oct 23, 1990
Filed: Dec 29, 1988
Inventors
Dean K. Norbeck
Harold Robert Schnetzka
Assignee (at issue)
York International 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.