Granted Patent
Utility
US 4,876,427 · App. 07/173,308
Locking, double-layered microwave package
Inventor:
Duane R. Mode
Patented Case
View Patent ↗
Granted: Oct 24, 1989
Filed: Mar 25, 1988
Inventor
Duane R. Mode
Assignee (at issue)
Waldorf Corporation
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.