Granted Patent
Utility
US 4,552,486 · App. 06/591,701
Grouting method - chemical method
Inventors:
Lloyd C. Knox, Clayton A. Moore
Patented Case
View Patent ↗
Granted: Nov 12, 1985
Filed: Mar 21, 1984
Inventors
Lloyd C. Knox
Clayton A. Moore
Assignee (at issue)
Halliburton
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.