Granted Patent
Utility
US 5,169,124 · App. 07/879,793
Method for assembling a plastic ball valve
Inventors:
Ricky E. Spears, Frank D. Sears, Stephen M. Horvath
Patented Case
View Patent ↗
Granted: Dec 8, 1992
Filed: May 6, 1992
Inventors
Ricky E. Spears
Frank D. Sears
Stephen M. Horvath
Assignee (at issue)
M&FC Holding, 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.