Granted Patent
Utility
US 4,215,928 · App. 06/025,633
Apparatus for treating the surfaces of cylindrical objects in a number of sequential steps
Inventors:
Barry J. Bayley, Austin Brittain, Kenneth Z. Graham, Clive S. Thawley
Patented Case
View Patent ↗
Granted: Aug 5, 1980
Filed: Mar 30, 1979
Inventors
Barry J. Bayley
Austin Brittain
Kenneth Z. Graham
Clive S. Thawley
Assignee (at issue)
Uniroyal Ltd.
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.