Granted Patent
Utility
US 4,525,629 · App. 06/386,115
Deflective focusing system for charged particle beam
Inventors:
Hirofumi Morita, Teruo Hosokawa
Patented Case
View Patent ↗
Granted: Jun 25, 1985
Filed: Jun 7, 1982
Inventors
Hirofumi Morita
Teruo Hosokawa
Assignee (at issue)
Nippon Telegraph and Telephone Public 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.