Granted Patent
Utility
US 4,835,720 · App. 06/838,383
Obstructed-field-indicia-sensing device
Inventors:
James W. Ditto, James W. Jensen
Patented Case
View Patent ↗
Granted: May 30, 1989
Filed: Mar 11, 1986
Inventors
James W. Ditto
James W. Jensen
Assignee (at issue)
Adolph Coors Company
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.