Granted Patent
Utility
US 4,600,063 · App. 06/614,474
Double-taper slip-on drill string stabilizer
Inventor:
Thomas R. Beasley
Patented Case
View Patent ↗
Granted: Jul 15, 1986
Filed: May 29, 1984
Inventor
Thomas R. Beasley
Assignee (at issue)
Dailey Petroleum Services Corp.
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.