Granted Patent
Utility
US 4,412,759 · App. 06/161,734
Reach rod grouting system
Inventors:
Frederick G. Britton, Don B. Landers
Patented Case
View Patent ↗
Granted: Nov 1, 1983
Filed: Jun 23, 1980
Inventors
Frederick G. Britton
Don B. Landers
Assignee (at issue)
OIL STATES 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.