Granted Patent
Utility
US 4,388,721 · App. 06/289,568
Throat upwell baffle
Inventors:
Herbert L. Hall, Jr., Isac M. Sheinkop
Patented Case
View Patent ↗
Granted: Jun 14, 1983
Filed: Aug 3, 1981
Inventors
Herbert L. Hall, Jr.
Isac M. Sheinkop
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.