Granted Patent
Utility
US 6,237,410 · App. 09/077,791
Method for controlling the speed of a pump based on measurement of the fluid depth in a well
Inventors:
John G. Dyck, James A. Baker, Ronald W. Halisky
Patented Case
View Patent ↗
Granted: May 29, 2001
Filed: Jun 8, 1998
Inventors
John G. Dyck
James A. Baker
Ronald W. Halisky
Assignee (at issue)
Circa Enterprises, 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.