Granted Patent
Utility
US 5,249,997 · App. 07/858,462
Composite multisection buoyant structure
Inventor:
Donald A. Nance
Patented Case
View Patent ↗
Granted: Oct 5, 1993
Filed: Mar 27, 1992
Inventor
Donald A. Nance
Assignee (at issue)
Westinghouse Electric Company LLC
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.