Granted Patent
Utility
US 4,360,709 · App. 06/184,182
Loop detecting circuit
Inventors:
Kazuo Hamazato, Junjiro Kitano, Tetsuo Takeshita
Patented Case
View Patent ↗
Granted: Nov 23, 1982
Filed: Sep 4, 1980
Inventors
Kazuo Hamazato
Junjiro Kitano
Tetsuo Takeshita
Assignees (at issue)
HITACHI, LTD.
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.