Granted Patent
Utility
US 4,478,121 · App. 06/379,476
Digital feed system
Inventors:
Frank Ritter, Romano Balordi
Patented Case
View Patent ↗
Granted: Oct 23, 1984
Filed: May 18, 1982
Inventors
Frank Ritter
Romano Balordi
Assignee (at issue)
Maryland Cup Corporation
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.