Granted Patent
Utility
US 6,250,639 · App. 09/229,525
Idler roll wet seal
Inventors:
Douglas R. Hayes, B. Shane Kelley, Charles East
Patented Case
View Patent ↗
Granted: Jun 26, 2001
Filed: Jan 13, 1999
Inventors
Douglas R. Hayes
B. Shane Kelley
Charles East
Assignee (at issue)
FMC CORPORATION
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.