Granted Patent
Utility
US 4,755,778 · App. 07/061,148
Microwave apparatus
Inventor:
Harry F. Chapell
Patented Case
View Patent ↗
Granted: Jul 5, 1988
Filed: Jun 12, 1987
Inventor
Harry F. Chapell
Assignee (at issue)
Sage Laboratories, 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.