Granted Patent
Utility
US 4,946,307 · App. 07/394,373
Asphalt pavement recycling apparatus
Inventor:
Herbert E. Jakob
Patented Case
View Patent ↗
Granted: Aug 7, 1990
Filed: Aug 15, 1989
Inventor
Herbert E. Jakob
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.