Granted Patent
Utility
US 4,293,147 · App. 06/026,138
Method and apparatus for securing a pipe to a fitting
Inventors:
Ronald Metcalfe, John Martyn Greig
Patented Case
View Patent ↗
Granted: Oct 6, 1981
Filed: Mar 30, 1979
Inventors
Ronald Metcalfe
John Martyn Greig
Assignees (at issue)
RM Fabircations Limited
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.