Granted Patent
Utility
US 5,654,885 · App. 08/411,889
Valve position controller
Inventors:
John Mayhew, Dwayne M. Puckett
Patented Case
View Patent ↗
Granted: Aug 5, 1997
Filed: Mar 28, 1995
Inventors
John Mayhew
Dwayne M. Puckett
Assignee (at issue)
Virginia Valve Company
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.