Granted Patent
Utility
US 5,599,581 · App. 08/315,259
Method for pneumatically controlling discharge of particulate material
Inventors:
Charles A. Burton, Douglas E. Boyd, James S. Belt
Patented Case
View Patent ↗
Granted: Feb 4, 1997
Filed: Sep 21, 1994
Inventors
Charles A. Burton
Douglas E. Boyd
James S. Belt
Assignee (at issue)
Owens-Corning Fiberglas Technology, 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.