Granted Patent
Utility
US 4,819,483 · App. 07/219,864
Level indicator control system for use with capacitance probes in tanks containing substances
Inventors:
Raymond H. Emplit, Donald Y. Daily
Patented Case
View Patent ↗
Granted: Apr 11, 1989
Filed: Jul 12, 1988
Inventors
Raymond H. Emplit
Donald Y. Daily
Assignee (at issue)
Custom Controls, 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.