Granted Patent
Utility
US 4,260,423 · App. 06/124,053
Kiln tar binder and method of producing it
Inventor:
James L. Thomas
Patented Case
View Patent ↗
Granted: Apr 7, 1981
Filed: Feb 25, 1980
Inventor
James L. Thomas
Assignee (at issue)
FMC CORPORATION
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.