Granted Patent
Utility
US 4,970,870 · App. 07/432,440
Commands system for electronic refrigerator control
Inventors:
Brian M. Midlang, David M. Christensen
Patented Case
View Patent ↗
Granted: Nov 20, 1990
Filed: Nov 6, 1989
Inventors
Brian M. Midlang
David M. Christensen
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.