Granted Patent
Utility
US 5,444,247 · App. 08/073,938
Sublimation apparatus and process
Inventor:
William L. Trueet
Patented Case
View Patent ↗
Granted: Aug 22, 1995
Filed: Jun 8, 1993
Inventor
William L. Trueet
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.