Granted Patent
Utility
US 5,451,840 · App. 08/123,154
Cathode-ray tube providing protection from alternating electric fields
Inventors:
Fumio Abe, Kouji Shingai, Hiroshi Okuda, Tetsuya Yamaguchi, Tomoki Takizawa
Patented Case
View Patent ↗
Granted: Sep 19, 1995
Filed: Sep 7, 1993
Inventors
Fumio Abe
Kouji Shingai
Hiroshi Okuda
Tetsuya Yamaguchi
Tomoki Takizawa
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.