Granted Patent
Utility
US 5,990,458 · App. 09/033,815
End cap contact assembly for a heater roller
Inventors:
Bruce E. Hyllberg, Robert G. Langley
Patented Case
View Patent ↗
Granted: Nov 23, 1999
Filed: Mar 3, 1998
Inventors
Bruce E. Hyllberg
Robert G. Langley
Assignee (at issue)
American Roller Company, LLC
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.