Granted Patent
Utility
US 5,478,530 · App. 08/310,629
Hot mix asphalt plant with catalytic reactor
Inventor:
Malcolm L. Swanson
Patented Case
View Patent ↗
Granted: Dec 26, 1995
Filed: Sep 22, 1994
Inventor
Malcolm L. Swanson
Assignee (at issue)
Astec Industries, 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.