Granted Patent
Utility
US 5,856,902 · App. 08/889,861
Earth leakage breaker
Inventors:
Takashi Hashimoto, Kiyoshi Tanigawa, Shoji Sasaki, Katsumi Watanabe
Patented Case
View Patent ↗
Granted: Jan 5, 1999
Filed: Jul 8, 1997
Inventors
Takashi Hashimoto
Kiyoshi Tanigawa
Shoji Sasaki
Katsumi Watanabe
Assignee (at issue)
FUJI ELECTRIC 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.