Granted Patent
Utility
US 4,614,207 · App. 06/205,847
Thread protector
Inventor:
Thomas C. Steinhagen
Patented Case
View Patent ↗
Granted: Sep 30, 1986
Filed: Nov 10, 1980
Inventor
Thomas C. Steinhagen
Assignee (at issue)
The Gates Rubber Company
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.