Granted Patent
Utility
US 4,679,830 · App. 06/735,224
Tube coupling
Inventor:
Frans J. J. A. Kok
Patented Case
View Patent ↗
Granted: Jul 14, 1987
Filed: May 16, 1985
Inventor
Frans J. J. A. Kok
Assignee (at issue)
Dresser Europe S.A.
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.