Granted Patent
Utility
US 6,602,023 · App. 09/730,509
Leaching chamber endplate
Inventors:
Donald Crescenzi, James J. Burns, Daniel Swistak
Patented Case
View Patent ↗
Granted: Aug 5, 2003
Filed: Dec 5, 2000
Inventors
Donald Crescenzi
James J. Burns
Daniel Swistak
Assignee (at issue)
INFILTRATOR SYSTEMS INC
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.