Granted Patent
Utility
US 5,164,884 · App. 07/662,760
Device for cooling a power transistor
Inventor:
Mikko Pesola
Patented Case
View Patent ↗
Granted: Nov 17, 1992
Filed: Feb 28, 1991
Inventor
Mikko Pesola
Assignee (at issue)
Nokia Mobile Phones Ltd.
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.