Granted Patent
Utility
US 5,637,957 · App. 08/617,602
Cathode-anode spacer comprising a projection of a length limited relative to its distance to the cathode
Inventors:
Takayoshi Konishi, Osamu Yamamoto
Patented Case
View Patent ↗
Granted: Jun 10, 1997
Filed: Mar 19, 1996
Inventors
Takayoshi Konishi
Osamu Yamamoto
Assignee (at issue)
NEC CORPORATION
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.