Granted Patent
Utility
US 4,335,308 · App. 06/110,406
Inspection of underwater structures
Inventors:
Leonard R. Caldecourt, Gordon V. Evans, Tony Parsons
Patented Case
View Patent ↗
Granted: Jun 15, 1982
Filed: Jan 8, 1980
Inventors
Leonard R. Caldecourt
Gordon V. Evans
Tony Parsons
Assignee (at issue)
United Kingdom Atomic Energy Authority
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.