Granted Patent
Utility
US 4,302,234 · App. 06/163,255
Method and apparatus for forming mineral fibers
Inventors:
Larry J. Guffey, William W. Schultz
Patented Case
View Patent ↗
Granted: Nov 24, 1981
Filed: Jun 26, 1980
Inventors
Larry J. Guffey
William W. Schultz
Assignee (at issue)
Owens Corning Fiberglass Corporation
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.