Granted Patent
Utility
US 4,589,447 · App. 06/722,974
Method of depositing a membrane within a conduit
Inventors:
John L. Kane, G. Richard Machlan
Patented Case
View Patent ↗
Granted: May 20, 1986
Filed: Apr 12, 1985
Inventors
John L. Kane
G. Richard Machlan
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.