Granted Patent
Utility
US 5,396,039 · App. 08/156,817
Process for assembling piping or components by TIG welding
Inventors:
Henri Chevrel, Taeko Hattori, Hideki Takagi, Eiichi Ozawa, Jean-Marie Friedt
Patented Case
View Patent ↗
Granted: Mar 7, 1995
Filed: Nov 24, 1993
Inventors
Henri Chevrel
Taeko Hattori
Hideki Takagi
Eiichi Ozawa
Jean-Marie Friedt
Assignee (at issue)
L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude
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.