Granted Patent
Utility
US 4,884,444 · App. 07/315,155
Motor-driven material level indicator
Inventor:
Charles H. Tuckey
Patented Case
View Patent ↗
Granted: Dec 5, 1989
Filed: Feb 24, 1989
Inventor
Charles H. Tuckey
Assignee (at issue)
WALBRO 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.