Granted Patent
Utility
US 4,399,407 · App. 06/327,511
Engine analyzer with constant width digital waveform display
Inventors:
Michael J. Kling, III, Joseph A. Marino
Patented Case
View Patent ↗
Granted: Aug 16, 1983
Filed: Dec 4, 1981
Inventors
Michael J. Kling, III
Joseph A. Marino
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.