Granted Patent
Utility
US 4,476,531 · App. 06/327,734
Engine analyzer with digital waveform display
Inventors:
Joseph A. Marino, Michael J. Kling, III, Sydney J. Roth
Patented Case
View Patent ↗
Granted: Oct 9, 1984
Filed: Dec 4, 1981
Inventors
Joseph A. Marino
Michael J. Kling, III
Sydney J. Roth
Assignee (at issue)
Bear Automotive Service Equipment Company
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.