Granted Patent
Utility
US 4,452,140 · App. 06/347,857
Printed web registration control apparatus
Inventors:
Jeffrey Isherwood, Delwyn L. Morris
Patented Case
View Patent ↗
Granted: Jun 5, 1984
Filed: Feb 11, 1982
Inventors
Jeffrey Isherwood
Delwyn L. Morris
Assignee (at issue)
Crosfield Electronics Limited
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.