Granted Patent
Utility
US 5,833,029 · App. 08/940,155
Pump jack pole assembly
Inventor:
Robert P. Berish
Patented Case
View Patent ↗
Granted: Nov 10, 1998
Filed: Sep 29, 1997
Inventor
Robert P. Berish
Assignee (at issue)
Quality Steel Products, 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.