Granted Patent
Utility
US 6,150,025 · App. 09/352,503
Polyurethane roller with high surface resistance
Inventors:
Ronald Lloyd Roe, Edward Wayne Weidert
Patented Case
View Patent ↗
Granted: Nov 21, 2000
Filed: Jul 12, 1999
Inventors
Ronald Lloyd Roe
Edward Wayne Weidert
Assignee (at issue)
Lexmark International, 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.