Granted Patent
Utility
US 5,737,939 · App. 08/798,888
Ultra low temperature split door freezer
Inventors:
John H. Valence, Keith L. Wharton
Patented Case
View Patent ↗
Granted: Apr 14, 1998
Filed: Feb 11, 1997
Inventors
John H. Valence
Keith L. Wharton
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.