Granted Patent
Utility
US 4,332,478 · App. 06/039,383
Method and apparatus for reducing smoke emissions in an asphalt drum mixer
Inventor:
Lee V. Binz
Patented Case
View Patent ↗
Granted: Jun 1, 1982
Filed: May 16, 1979
Inventor
Lee V. Binz
Assignee (at issue)
Barber-Greene Company
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.