Granted Patent
Utility
US 5,321,632 · App. 07/840,118
Method and apparatus for measuring the length of a transmission line in accordance with a reflected waveform
Inventors:
Taiichi Otsuji, Toshiyuki Shimizu
Patented Case
View Patent ↗
Granted: Jun 14, 1994
Filed: Feb 24, 1992
Inventors
Taiichi Otsuji
Toshiyuki Shimizu
Assignees (at issue)
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
SCHLUMBERGER TECHNOLOGIES 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.