Granted Patent
Utility
US 4,244,607 · App. 06/000,449
Cylindrical threaded connection
Inventor:
Thomas L. Blose
Patented Case
View Patent ↗
Granted: Jan 13, 1981
Filed: Jan 2, 1979
Inventor
Thomas L. Blose
Assignee (at issue)
Hydril Company
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.