Granted Patent
Utility
US 5,899,271 · App. 09/116,719
Particle control screen assembly for a perforated pipe used in a well, a sand filter system, and methods of making the same
Inventors:
Anthony D. Simone, Michael J. Panciera
Patented Case
View Patent ↗
Granted: May 4, 1999
Filed: Jul 16, 1998
Inventors
Anthony D. Simone
Michael J. Panciera
Assignee (at issue)
Purolator Products Company
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.