Granted Patent
Utility
US 4,946,283 · App. 07/367,343
Apparatus for and methods of producing a hot asphaltic material
Inventor:
Joseph E. Musil
Patented Case
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Granted: Aug 7, 1990
Filed: Jun 16, 1989
Inventor
Joseph E. Musil
Assignee (at issue)
Cedarapids, 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.