Granted Patent
Utility
US 4,546,485 · App. 06/556,828
Method and apparatus for producing uniform strands from a split fiber glass bushing
Inventors:
David Griffiths, Larry G. Wright
Patented Case
View Patent ↗
Granted: Oct 8, 1985
Filed: Dec 1, 1983
Inventors
David Griffiths
Larry G. Wright
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.