Granted Patent
Utility
US 4,548,085 · App. 06/561,611
Tension measuring device and method for flexible linear material
Inventor:
Reed H. Grundy
Patented Case
View Patent ↗
Granted: Oct 22, 1985
Filed: Dec 14, 1983
Inventor
Reed H. Grundy
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.