Granted Patent
Utility
US 6,522,061 · App. 09/622,701
Field emission device with microchannel gain element
Inventor:
Harry F. Lockwood
Patented Case
View Patent ↗
Granted: Feb 18, 2003
Filed: Aug 21, 2000
Inventor
Harry F. Lockwood
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.