Granted Patent
Utility
US 6,725,464 · App. 10/147,339
Rotary joint for diving suits
Inventor:
Kenneth Michael Humphrey
Patented Case
View Patent ↗
Granted: Apr 27, 2004
Filed: May 15, 2002
Inventor
Kenneth Michael Humphrey
Assignee (at issue)
Oceanworks 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.