Granted Patent
Utility
US 4,599,056 · App. 06/683,730
Universal joint and progressive cavity transducer using the same
Inventor:
Gary M. Crase
Patented Case
View Patent ↗
Granted: Jul 8, 1986
Filed: Dec 19, 1984
Inventor
Gary M. Crase
Assignee (at issue)
SMITH INTERNATIONAL, 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.