Granted Patent
Utility
US 5,397,959 · App. 08/209,624
Twin-convex electron gun
Inventors:
Chie Takahashi, Hisakazu Yamane
Patented Case
View Patent ↗
Granted: Mar 14, 1995
Filed: Mar 14, 1994
Inventors
Chie Takahashi
Hisakazu Yamane
Assignee (at issue)
MITSUBISHI ELECTRIC 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.