Granted Patent
Utility
US 4,825,691 · App. 07/215,968
Method and apparatus for detecting trouble in pulse generators
Inventor:
Akira Sekiguchi
Patented Case
View Patent ↗
Granted: May 2, 1989
Filed: Jul 7, 1988
Inventor
Akira Sekiguchi
Assignee (at issue)
Diesel Kiki 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.