Granted Patent
Utility
US 6,044,648 · App. 09/157,286
Cooling device having liquid refrigerant injection ring
Inventor:
Donald W. Rode
Patented Case
View Patent ↗
Granted: Apr 4, 2000
Filed: Sep 18, 1998
Inventor
Donald W. Rode
Assignee (at issue)
Forma Scientific, 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.