Granted Patent
Utility
US 4,412,559 · App. 06/396,990
Dog locking sleeve
Inventors:
Steven G. Streich, R. Benton Nickles, Harold O. Treece
Patented Case
View Patent ↗
Granted: Nov 1, 1983
Filed: Jul 9, 1982
Inventors
Steven G. Streich
R. Benton Nickles
Harold O. Treece
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.