Granted Patent
Utility
US 5,490,392 · App. 08/332,355
Heat transfer method and apparatus
Inventors:
Roger D. Williams, Mark S. Gengler
Patented Case
View Patent ↗
Granted: Feb 13, 1996
Filed: Oct 31, 1994
Inventors
Roger D. Williams
Mark S. Gengler
Assignee (at issue)
Pneumafil 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.