Granted Patent
Utility
US 6,578,881 · App. 09/884,705
Fluid-tight pipe union
Inventors:
David Lynn, Melvin Clarkson
Patented Case
View Patent ↗
Granted: Jun 17, 2003
Filed: Jun 18, 2001
Inventors
David Lynn
Melvin Clarkson
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.