Granted Patent
Utility
US 5,938,326 · App. 08/899,900
Combination dispersion and skimming device
Inventors:
Dennis Krivohlavek, Robert Z. Johnson
Patented Case
View Patent ↗
Granted: Aug 17, 1999
Filed: Jul 24, 1997
Inventors
Dennis Krivohlavek
Robert Z. Johnson
Assignee (at issue)
Asphalt Technology LLC.
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.