Granted Patent
Utility
US 5,827,430 · App. 08/547,352
Coreless and spirally wound non-woven filter element
Inventors:
Marney Dunman Perry, Jr., Stephen A. von Phul, Nolan Glover, H. C. Bradford, Floyd Roberts
Patented Case
View Patent ↗
Granted: Oct 27, 1998
Filed: Oct 24, 1995
Inventors
Marney Dunman Perry, Jr.
Stephen A. von Phul
Nolan Glover
H. C. Bradford
Floyd Roberts
Assignee (at issue)
Perry Equipment 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.