Granted Patent
Utility
US 5,701,940 · App. 08/509,910
Cellular shade
Inventors:
James A. Ford, Don Lee Bertva, James Murrell Kennedy, Ronald Lynn Presdorf
Patented Case
View Patent ↗
Granted: Dec 30, 1997
Filed: Aug 1, 1995
Inventors
James A. Ford
Don Lee Bertva
James Murrell Kennedy
Ronald Lynn Presdorf
Assignee (at issue)
Cooper Industries Holdings
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.