Granted Patent
Utility
US 6,443,538 · App. 10/034,977
Feed valve and reference pressure enhancement
Inventors:
Eugene Smith, Milt Deno, Don Johnson
Patented Case
View Patent ↗
Granted: Sep 3, 2002
Filed: Dec 27, 2001
Inventors
Eugene Smith
Milt Deno
Don Johnson
Assignee (at issue)
GE Harris Railway Electronics LLC
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.