Granted Patent
Utility
US 5,514,222 · App. 07/783,721
Method for controlling asbestos dust
Inventor:
Thomas H. Williams
Patented Case
View Patent ↗
Granted: May 7, 1996
Filed: Oct 25, 1991
Inventor
Thomas H. Williams
Assignee (at issue)
Eastman Chemical 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.