Granted Patent
Utility
US 6,739,155 · App. 09/636,286
Quartz making an elongated fused quartz article using a furnace with metal-lined walls
Inventors:
Robert Arthur Giddings, Frederic F. Ahlgren
Patented Case
View Patent ↗
Granted: May 25, 2004
Filed: Aug 10, 2000
Inventors
Robert Arthur Giddings
Frederic F. Ahlgren
Assignee (at issue)
General Electric Company
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.