Granted Patent
Utility
US 6,779,561 · App. 10/698,164
Single flanged end ball valve of unitary construction
Inventor:
Michael E. Reck
Patented Case
View Patent ↗
Granted: Aug 24, 2004
Filed: Oct 31, 2003
Inventor
Michael E. Reck
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.