Granted Patent
Utility
US 4,548,490 · App. 06/523,918
Toner feeder system
Inventors:
John C. Stirrat, Kenneth L. Hurley, Brian F. Whittaker
Patented Case
View Patent ↗
Granted: Oct 22, 1985
Filed: Aug 16, 1983
Inventors
John C. Stirrat
Kenneth L. Hurley
Brian F. Whittaker
Assignee (at issue)
Delphax Systems
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.