Granted Patent
Utility
US 5,730,591 · App. 08/375,471
Method and apparatus for aggregate treatment
Inventors:
Thomas F. Robertson, Todd A. Miller, Dennis E. Quinn
Patented Case
View Patent ↗
Granted: Mar 24, 1998
Filed: Jan 19, 1995
Inventors
Thomas F. Robertson
Todd A. Miller
Dennis E. Quinn
Assignee (at issue)
North American Manufacturing 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.