Granted Patent
Utility
US 4,249,398 · App. 06/012,521
Method and apparatus for processing heat-softenable fiber forming material
Inventors:
Neil E. Greene, Seshadri Srinivasan
Patented Case
View Patent ↗
Granted: Feb 10, 1981
Filed: Feb 16, 1979
Inventors
Neil E. Greene
Seshadri Srinivasan
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.