Granted Patent
Utility
US 4,055,726 · App. 05/699,381
Electrical position resolving by zero-crossing delay
Inventors:
John A. Turner, Gordon J. Ritchie
Patented Case
View Patent ↗
Granted: Oct 25, 1977
Filed: Jun 24, 1976
Inventors
John A. Turner
Gordon J. Ritchie
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.