Granted Patent
Utility
US 4,827,768 · App. 07/200,942
Motor-driven material level indicator
Inventor:
Charles H. Tuckey
Patented Case
View Patent ↗
Granted: May 9, 1989
Filed: Jun 1, 1988
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.