Granted Patent
Utility
US 5,410,131 · App. 08/043,867
Welding connection assembly for heat-fusing plastic tubes
Inventors:
Martine Brunet, Denis Dufour
Patented Case
View Patent ↗
Granted: Apr 25, 1995
Filed: Apr 7, 1993
Inventors
Martine Brunet
Denis Dufour
Assignee (at issue)
Gaz de France
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.