Granted Patent
Utility
US 6,140,623 · App. 09/383,301
Defrost heater end cap
Inventors:
Michael J. Boehnlein, Michael Cousins
Patented Case
View Patent ↗
Granted: Oct 31, 2000
Filed: Aug 25, 1999
Inventors
Michael J. Boehnlein
Michael Cousins
Assignee (at issue)
Wirekraft Industries, 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.