Granted Patent
Utility
US 4,758,259 · App. 07/085,313
Hollow glass fiber bushing, method of making hollow fibers and the hollow glass fibers made by that method
Inventor:
Thomas H. Jensen
Patented Case
View Patent ↗
Granted: Jul 19, 1988
Filed: Aug 10, 1987
Inventor
Thomas H. Jensen
Assignee (at issue)
PPG Industries, Inc.
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.