Granted Patent
Utility
US 5,352,477 · App. 08/092,182
Method for manufacturing a cathode for a gas discharge tube
Inventor:
Hiroshi Sakurai
Patented Case
View Patent ↗
Granted: Oct 4, 1994
Filed: Jul 14, 1993
Inventor
Hiroshi Sakurai
Assignee (at issue)
Matsushita Electronics 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.