Granted Patent
Utility
US 4,475,839 · App. 06/482,800
Sucker rod fitting
Inventor:
Donald G. Strandberg
Patented Case
View Patent ↗
Granted: Oct 9, 1984
Filed: Apr 7, 1983
Inventor
Donald G. Strandberg
Assignee (at issue)
Park-Ohio Industries
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.