Granted Patent
Utility
US 5,813,801 · App. 08/673,357
Dense phase particulate conveying system and method with continuous air leakage management
Inventors:
Richard E. Newbolt, Ross McEllhiney
Patented Case
View Patent ↗
Granted: Sep 29, 1998
Filed: Jun 28, 1996
Inventors
Richard E. Newbolt
Ross McEllhiney
Assignee (at issue)
MAC Equipment, 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.