Granted Patent
Utility
US 4,312,214 · App. 06/160,268
Knock detector for internal combustion engine
Inventors:
Dennis M. Kramer, John C. Dock
Patented Case
View Patent ↗
Granted: Jan 26, 1982
Filed: Jun 17, 1980
Inventors
Dennis M. Kramer
John C. Dock
Assignee (at issue)
Chrysler Group LLC
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.