Granted Patent
Utility
US 6,539,726 · App. 09/851,407
Vapor plug for cryogenic storage vessels
Inventors:
R. Giesy, Mark Ventura, Funn Roberts
Patented Case
View Patent ↗
Granted: Apr 1, 2003
Filed: May 8, 2001
Inventors
R. Giesy
Mark Ventura
Funn Roberts
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.