Granted Patent
Utility
US 5,944,270 · App. 09/105,835
Self-contained air seal assembly for coal pulverizer
Inventor:
Lawrence S. Farris
Patented Case
View Patent ↗
Granted: Aug 31, 1999
Filed: Jun 26, 1998
Inventor
Lawrence S. Farris
Assignee (at issue)
Combustion Engineering, 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.