Granted Patent
Utility
US 5,893,956 · App. 08/922,652
Method of making a filter element
Inventors:
Marney Dunman Perry, Jr., Stephen A. von Phul, Nolan Glover, H. C. Bradford, Floyd Roberts
Patented Case
View Patent ↗
Granted: Apr 13, 1999
Filed: Sep 3, 1997
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.