Granted Patent
Utility
US 4,236,115 · App. 05/959,343
Synchronization detecting and indicating system
Inventor:
Robert E. Nelson
Patented Case
View Patent ↗
Granted: Nov 25, 1980
Filed: Nov 9, 1978
Inventor
Robert E. Nelson
Assignee (at issue)
General Motors 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.