Granted Patent
Utility
US 5,864,913 · App. 08/024,735
Window cleaning squeegee
Inventors:
Brock Robertson, David Rognlien, Barbara Rognlien
Patented Case
View Patent ↗
Granted: Feb 2, 1999
Filed: Feb 17, 1998
Inventors
Brock Robertson
David Rognlien
Barbara Rognlien
Assignee (at issue)
Carrand Companies, 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.