Granted Patent
Utility
US 6,732,749 · App. 10/014,121
Particle barrier drain
Inventor:
Larry Myland
Patented Case
View Patent ↗
Granted: May 11, 2004
Filed: Dec 11, 2001
Inventor
Larry Myland
Assignee (at issue)
Akrion, 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.