Granted Patent
Utility
US 6,616,735 · App. 09/710,466
Compressed gas systems utilizing a variable pressure membrane air drier, and method of operation thereof
Inventors:
John H. Burban, Robert O. Crowder
Patented Case
View Patent ↗
Granted: Sep 9, 2003
Filed: Nov 10, 2000
Inventors
John H. Burban
Robert O. Crowder
Assignee (at issue)
Porous Media 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.