Granted Patent
Utility
US 4,272,271 · App. 06/061,572
Apparatus for production of mineral fibers
Inventor:
Thomas K. Thompson
Patented Case
View Patent ↗
Granted: Jun 9, 1981
Filed: Jul 30, 1979
Inventor
Thomas K. Thompson
Assignee (at issue)
Owens-Corning Fiberglas Corp.
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.