Granted Patent
Utility
US 6,830,684 · App. 10/192,627
Integrated liquid and gas distribution device for underdrain block laterals
Inventor:
Jerry Stegge
Patented Case
View Patent ↗
Granted: Dec 14, 2004
Filed: Jul 10, 2002
Inventor
Jerry Stegge
Assignee (at issue)
USFilter Corporation
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.