Granted Patent
Utility
US 4,528,017 · App. 06/472,365
Blank cylinder apparatus
Inventors:
Vaughan Abbott, Bruce R. Beckwith, Charles M. Kingsbury, John P. Mungovan, Elden H. Mills
Patented Case
View Patent ↗
Granted: Jul 9, 1985
Filed: Mar 4, 1983
Inventors
Vaughan Abbott
Bruce R. Beckwith
Charles M. Kingsbury
John P. Mungovan
Elden H. Mills
Assignee (at issue)
Emhart Industries, 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.