Granted Patent
Utility
US 4,549,753 · App. 06/424,339
Rotary joint
Inventor:
Rene T. Nuytten
Patented Case
View Patent ↗
Granted: Oct 29, 1985
Filed: Sep 27, 1982
Inventor
Rene T. Nuytten
Assignee (at issue)
Can-Dive Services Ltd.
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.