Granted Patent
Utility
US 4,799,178 · App. 07/054,292
Method and apparatus for detecting rotational speed
Inventors:
Peter J. Spadafora, Jill G. Hersberger, Myron H. Bell, Robert L. Harding
Patented Case
View Patent ↗
Granted: Jan 17, 1989
Filed: May 26, 1987
Inventors
Peter J. Spadafora
Jill G. Hersberger
Myron H. Bell
Robert L. Harding
Assignee (at issue)
DELCO ELECTRONICS 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.