Granted Patent
Utility
US 5,218,988 · App. 07/765,535
Liquid feed system
Inventors:
Clifford F. McNamara, James W. Livingston
Patented Case
View Patent ↗
Granted: Jun 15, 1993
Filed: Sep 25, 1991
Inventors
Clifford F. McNamara
James W. Livingston
Assignee (at issue)
Beta Technology, Inc.
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.