Granted Patent
Utility
US 4,788,497 · App. 07/013,139
Apparatus for measuring motor rotation position and speed
Inventor:
Nobuo Katsumura
Patented Case
View Patent ↗
Granted: Nov 29, 1988
Filed: Feb 10, 1987
Inventor
Nobuo Katsumura
Assignee (at issue)
Konica 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.