Granted Patent
Utility
US 4,959,795 · App. 07/294,726
Insertion machine with distributed chargeback
Inventors:
Dean Everett Christensen, David J. Helffrich, Christopher K. Scullion, Edward W. Hindle
Patented Case
View Patent ↗
Granted: Sep 25, 1990
Filed: Jan 9, 1989
Inventors
Dean Everett Christensen
David J. Helffrich
Christopher K. Scullion
Edward W. Hindle
Assignee (at issue)
Bell and Howell, 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.