Granted Patent
Utility
US 4,306,140 · App. 06/094,156
Insulative multi-pane heated window structure
Inventor:
Michael E. Stromquist
Patented Case
View Patent ↗
Granted: Dec 15, 1981
Filed: Nov 14, 1979
Inventor
Michael E. Stromquist
Assignee (at issue)
Anthony's Manufacturing Company, 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.