Granted Patent
Utility
US 4,183,562 · App. 05/783,636
Marine riser conduit section coupling means
Inventors:
Bruce J. Watkins, A. Michael Regan, William P. Slata
Patented Case
View Patent ↗
Granted: Jan 15, 1980
Filed: Apr 1, 1977
Inventors
Bruce J. Watkins
A. Michael Regan
William P. Slata
Assignee (at issue)
Regan Offshore 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.