Granted Patent
Utility
US 6,725,897 · App. 09/995,375
Variable friction device for a cordless blind
Inventor:
Roger Palmer
Patented Case
View Patent ↗
Granted: Apr 27, 2004
Filed: Nov 28, 2001
Inventor
Roger Palmer
Assignee (at issue)
Newell Window Furnishings, 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.