Granted Patent
Utility
US 4,417,905 · App. 06/173,718
Gas making
Inventors:
Reginald G. S. Banks, Alan Williams
Patented Case
View Patent ↗
Granted: Nov 29, 1983
Filed: Jul 30, 1980
Inventors
Reginald G. S. Banks
Alan Williams
Assignee (at issue)
British Gas
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.