Granted Patent
Utility
US 6,816,048 · App. 09/956,059
Electromagnet and actuating mechanism for switch device, using thereof
Inventors:
Ayumu Morita, Yasuaki Suzuki, Masato Yabu, Tooru Tanimizu, Yozo Shibata, Takashi Kadowaki
Patented Case
View Patent ↗
Granted: Nov 9, 2004
Filed: Sep 20, 2001
Inventors
Ayumu Morita
Yasuaki Suzuki
Masato Yabu
Tooru Tanimizu
Yozo Shibata
Takashi Kadowaki
Assignees (at issue)
HITACHI, LTD.
Hitachi Engineering & Services Co., Ltd.
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.