Granted Patent
Utility
US 4,246,017 · App. 06/095,011
Method and apparatus for forming mineral fibers
Inventor:
John D. Phillips
Patented Case
View Patent ↗
Granted: Jan 20, 1981
Filed: Nov 16, 1979
Inventor
John D. Phillips
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.