Granted Patent
Utility
US 4,572,156 · App. 06/654,225
Fireplace screen assembly
Inventor:
William L. Lentz
Patented Case
View Patent ↗
Granted: Feb 25, 1986
Filed: Sep 25, 1984
Inventor
William L. Lentz
Assignee (at issue)
DeSoto, 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.