Granted Patent
Utility
US 5,977,713 · App. 08/827,079
High voltage noise filter and magnetron device using it
Inventors:
Hiroshi Ochiai, Mitsuichi Hiraishi, Masanori Yoshihara, Yasunobu Nakano
Patented Case
View Patent ↗
Granted: Nov 2, 1999
Filed: Mar 26, 1997
Inventors
Hiroshi Ochiai
Mitsuichi Hiraishi
Masanori Yoshihara
Yasunobu Nakano
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.