Granted Patent
Utility
US 6,821,055 · App. 10/244,395
Marine buoyancy modules and units
Inventor:
Robert Oram
Patented Case
View Patent ↗
Granted: Nov 23, 2004
Filed: Sep 17, 2002
Inventor
Robert Oram
Assignee (at issue)
CRP Group Limited
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.