Granted Patent
Utility
US 4,850,206 · App. 07/272,975
Crisper humidity control
Inventor:
Wallace L. Larsen
Patented Case
View Patent ↗
Granted: Jul 25, 1989
Filed: Nov 18, 1988
Inventor
Wallace L. Larsen
Assignee (at issue)
Amana Refrigeration, 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.