Granted Patent
Utility
US 4,907,749 · App. 06/515,266
Coupling
Inventors:
Peter C. Bennett, Rodney J. Clarke
Patented Case
View Patent ↗
Granted: Mar 13, 1990
Filed: Jul 19, 1983
Inventors
Peter C. Bennett
Rodney J. Clarke
Assignee (at issue)
IMPERIAL CHEMICAL INDUSTRIES 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.