Granted Patent
Utility
US 4,823,478 · App. 07/126,752
Freeze dryer for unattended operation
Inventor:
Taylor Thompson
Patented Case
View Patent ↗
Granted: Apr 25, 1989
Filed: Nov 30, 1987
Inventor
Taylor Thompson
Assignee (at issue)
FTS Systems, 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.