Granted Patent
Utility
US 4,369,828 · App. 06/266,815
Supplemental window and blind unit
Inventor:
Michael J. Tatro
Patented Case
View Patent ↗
Granted: Jan 25, 1983
Filed: May 26, 1981
Inventor
Michael J. Tatro
Assignee (at issue)
Wausau Metals 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.