Granted Patent
Utility
US 6,237,667 · App. 09/572,034
Roller shade tube with extension wing
Inventors:
Richard Fraczek, David Cross
Patented Case
View Patent ↗
Granted: May 29, 2001
Filed: May 16, 2000
Inventors
Richard Fraczek
David Cross
Assignee (at issue)
Rollease, 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.